51392012 has 24 divisors (see below), whose sum is σ = 104472480. Its totient is φ = 21663360.

The previous prime is 51391937. The next prime is 51392027. The reversal of 51392012 is 21029315.

It is a super-2 number, since 2×51392012² = 5282277794816288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13337 + ... + 16752.

It is an arithmetic number, because the mean of its divisors is an integer number (4353020).

Almost surely, 2^51392012 is an apocalyptic number.

It is an amenable number.

51392012 is an abundant number, since it is smaller than the sum of its proper divisors (53080468).

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

51392012 is a wasteful number, since it uses less digits than its factorization.

51392012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30161 (or 30159 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 51392012 is about 7168.8222184680. The cubic root of 51392012 is about 371.7907155171.

The spelling of 51392012 in words is "fifty-one million, three hundred ninety-two thousand, twelve".