51258872 has 32 divisors (see below), whose sum is σ = 113387520. Its totient is φ = 21258720.

The previous prime is 51258871. The next prime is 51258899. The reversal of 51258872 is 27885215.

It is a happy number.

51258872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51258871) by changing a digit.

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, 13028 + ... + 16499.

It is an arithmetic number, because the mean of its divisors is an integer number (3543360).

Almost surely, 2^51258872 is an apocalyptic number.

It is an amenable number.

51258872 is an abundant number, since it is smaller than the sum of its proper divisors (62128648).

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

51258872 is a wasteful number, since it uses less digits than its factorization.

51258872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29571 (or 29567 counting only the distinct ones).

The product of its digits is 44800, while the sum is 38.

The square root of 51258872 is about 7159.5301521818. The cubic root of 51258872 is about 371.4693748918.

The spelling of 51258872 in words is "fifty-one million, two hundred fifty-eight thousand, eight hundred seventy-two".