51625552 has 60 divisors (see below), whose sum is σ = 112867776. Its totient is φ = 22676160.

The previous prime is 51625543. The next prime is 51625579. The reversal of 51625552 is 25552615.

51625552 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 (31) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 653449 + ... + 653527.

Almost surely, 2^51625552 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 51625552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56433888).

51625552 is an abundant number, since it is smaller than the sum of its proper divisors (61242224).

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

51625552 is a wasteful number, since it uses less digits than its factorization.

51625552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 139 counting only the distinct ones).

The product of its digits is 15000, while the sum is 31.

The square root of 51625552 is about 7185.0923445701. The cubic root of 51625552 is about 372.3530390353.

The spelling of 51625552 in words is "fifty-one million, six hundred twenty-five thousand, five hundred fifty-two".