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51074907 = 3131968927
BaseRepresentation
bin1100001011010…
…1011101011011
310120002212121020
43002311131123
5101033344112
65022413523
71160062302
oct302653533
9116085536
1051074907
1126915374
12151312a3
13a773750
146ad7439
15473d48c
hex30b575b

51074907 has 16 divisors (see below), whose sum is σ = 77199360. Its totient is φ = 29776032.

The previous prime is 51074899. The next prime is 51074917. The reversal of 51074907 is 70947015.

It is not a de Polignac number, because 51074907 - 23 = 51074899 is a prime.

It is a super-2 number, since 2×510749072 = 5217292250117298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51074917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33723 + ... + 35204.

It is an arithmetic number, because the mean of its divisors is an integer number (4824960).

Almost surely, 251074907 is an apocalyptic number.

51074907 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

51074907 is a deficient number, since it is larger than the sum of its proper divisors (26124453).

51074907 is a wasteful number, since it uses less digits than its factorization.

51074907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68962.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 51074907 is about 7146.6710432201. The cubic root of 51074907 is about 371.0244484679.

The spelling of 51074907 in words is "fifty-one million, seventy-four thousand, nine hundred seven".

Divisors: 1 3 13 19 39 57 247 741 68927 206781 896051 1309613 2688153 3928839 17024969 51074907