51521107 has 16 divisors (see below), whose sum is σ = 57264480. Its totient is φ = 45964800.

The previous prime is 51521089. The next prime is 51521111. The reversal of 51521107 is 70112515.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51521107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51521117) by changing a digit.

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, 224869 + ... + 225097.

It is an arithmetic number, because the mean of its divisors is an integer number (3579030).

Almost surely, 2^51521107 is an apocalyptic number.

51521107 is a deficient number, since it is larger than the sum of its proper divisors (5743373).

51521107 is a wasteful number, since it uses less digits than its factorization.

51521107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 51521107 is about 7177.8204909290. The cubic root of 51521107 is about 372.1017637920.

The spelling of 51521107 in words is "fifty-one million, five hundred twenty-one thousand, one hundred seven".