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51255054 = 2324366221
BaseRepresentation
bin1100001110000…
…1011100001110
310120110000201100
43003201130032
5101110130204
65030323530
71161442434
oct303413416
9116400640
1051255054
1126a28754
12151b95a6
13a807746
146b42d54
154776a39
hex30e170e

51255054 has 24 divisors (see below), whose sum is σ = 113636952. Its totient is φ = 16687440.

The previous prime is 51255053. The next prime is 51255133. The reversal of 51255054 is 45055215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51255053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32337 + ... + 33884.

It is an arithmetic number, because the mean of its divisors is an integer number (4734873).

Almost surely, 251255054 is an apocalyptic number.

51255054 is an abundant number, since it is smaller than the sum of its proper divisors (62381898).

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

51255054 is a wasteful number, since it uses less digits than its factorization.

51255054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66272 (or 66269 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 51255054 is about 7159.2635096077. The cubic root of 51255054 is about 371.4601517386.

The spelling of 51255054 in words is "fifty-one million, two hundred fifty-five thousand, fifty-four".

Divisors: 1 2 3 6 9 18 43 86 129 258 387 774 66221 132442 198663 397326 595989 1191978 2847503 5695006 8542509 17085018 25627527 51255054