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51260930 = 257732299
BaseRepresentation
bin1100001110001…
…0111000000010
310120110022202222
43003202320002
5101110322210
65030411042
71161465530
oct303427002
9116408688
1051260930
1126a32106
1215200a82
13a80a316
146b45150
154778655
hex30e2e02

51260930 has 16 divisors (see below), whose sum is σ = 105451200. Its totient is φ = 17575152.

The previous prime is 51260929. The next prime is 51260939. The reversal of 51260930 is 3906215.

It is a self number, because there is not a number n which added to its sum of digits gives 51260930.

It is not an unprimeable number, because it can be changed into a prime (51260939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366080 + ... + 366219.

It is an arithmetic number, because the mean of its divisors is an integer number (6590700).

Almost surely, 251260930 is an apocalyptic number.

51260930 is an abundant number, since it is smaller than the sum of its proper divisors (54190270).

51260930 is a wasteful number, since it uses less digits than its factorization.

51260930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732313.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 51260930 is about 7159.6738752544. The cubic root of 51260930 is about 371.4743462182.

The spelling of 51260930 in words is "fifty-one million, two hundred sixty thousand, nine hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 732299 1464598 3661495 5126093 7322990 10252186 25630465 51260930