51464856 has 16 divisors (see below), whose sum is σ = 128662200. Its totient is φ = 17154944.

The previous prime is 51464837. The next prime is 51464857. The reversal of 51464856 is 65846415.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51464857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072161 + ... + 1072208.

Almost surely, 2^51464856 is an apocalyptic number.

It is an amenable number.

51464856 is an abundant number, since it is smaller than the sum of its proper divisors (77197344).

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

51464856 is a wasteful number, since it uses less digits than its factorization.

51464856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144378 (or 2144374 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The square root of 51464856 is about 7173.9010308200. The cubic root of 51464856 is about 371.9662936277.

The spelling of 51464856 in words is "fifty-one million, four hundred sixty-four thousand, eight hundred fifty-six".