51257012 has 24 divisors (see below), whose sum is σ = 92934912. Its totient is φ = 24710400.

The previous prime is 51257009. The next prime is 51257021. The reversal of 51257012 is 21075215.

It is a happy number.

51257012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43187 + ... + 44357.

It is an arithmetic number, because the mean of its divisors is an integer number (3872288).

Almost surely, 2^51257012 is an apocalyptic number.

It is an amenable number.

51257012 is a deficient number, since it is larger than the sum of its proper divisors (41677900).

51257012 is a wasteful number, since it uses less digits than its factorization.

51257012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559 (or 1557 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 51257012 is about 7159.4002542112. The cubic root of 51257012 is about 371.4648817419.

The spelling of 51257012 in words is "fifty-one million, two hundred fifty-seven thousand, twelve".