51900915 has 32 divisors (see below), whose sum is σ = 95924736. Its totient is φ = 23682560.

The previous prime is 51900907. The next prime is 51900931.

51900915 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51900915 - 2³ = 51900907 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6447 + ... + 12056.

It is an arithmetic number, because the mean of its divisors is an integer number (2997648).

Almost surely, 2^51900915 is an apocalyptic number.

51900915 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51900915 is a deficient number, since it is larger than the sum of its proper divisors (44023821).

51900915 is a wasteful number, since it uses less digits than its factorization.

51900915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18539.

The product of its (nonzero) digits is 2025, while the sum is 30.

The square root of 51900915 is about 7204.2289663780. The cubic root of 51900915 is about 373.0138906676.

The spelling of 51900915 in words is "fifty-one million, nine hundred thousand, nine hundred fifteen".