51232056 has 64 divisors (see below), whose sum is σ = 135638400. Its totient is φ = 16080768.

The previous prime is 51232039. The next prime is 51232061. The reversal of 51232056 is 65023215.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128850 + ... + 129246.

It is an arithmetic number, because the mean of its divisors is an integer number (2119350).

Almost surely, 2^51232056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51232056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67819200).

51232056 is an abundant number, since it is smaller than the sum of its proper divisors (84406344).

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

51232056 is a wasteful number, since it uses less digits than its factorization.

51232056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708 (or 704 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 51232056 is about 7157.6571585960. The cubic root of 51232056 is about 371.4045857151.

The spelling of 51232056 in words is "fifty-one million, two hundred thirty-two thousand, fifty-six".