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51255060 = 22351316521
BaseRepresentation
bin1100001110000…
…1011100010100
310120110000201120
43003201130110
5101110130220
65030323540
71161442443
oct303413424
9116400646
1051255060
1126a2875a
12151b95b0
13a80774c
146b42d5a
154776a40
hex30e1714

51255060 has 48 divisors (see below), whose sum is σ = 144631872. Its totient is φ = 13561600.

The previous prime is 51255053. The next prime is 51255133. The reversal of 51255060 is 6055215.

It is a self number, because there is not a number n which added to its sum of digits gives 51255060.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4600 + ... + 11120.

It is an arithmetic number, because the mean of its divisors is an integer number (3013164).

Almost surely, 251255060 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51255060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72315936).

51255060 is an abundant number, since it is smaller than the sum of its proper divisors (93376812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51255060 is a wasteful number, since it uses less digits than its factorization.

51255060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6664 (or 6662 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 51255060 is about 7159.2639286452. The cubic root of 51255060 is about 371.4601662332.

The spelling of 51255060 in words is "fifty-one million, two hundred fifty-five thousand, sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 131 262 393 524 655 786 1310 1572 1965 2620 3930 6521 7860 13042 19563 26084 32605 39126 65210 78252 97815 130420 195630 391260 854251 1708502 2562753 3417004 4271255 5125506 8542510 10251012 12813765 17085020 25627530 51255060