56951388 has 72 divisors (see below), whose sum is σ = 157252368. Its totient is φ = 17273088.

The previous prime is 56951387. The next prime is 56951413. The reversal of 56951388 is 88315965.

56951388 is a `hidden beast` number, since 56 + 9 + 513 + 88 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56951383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33331 + ... + 34997.

Almost surely, 2^56951388 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 56951388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78626184).

56951388 is an abundant number, since it is smaller than the sum of its proper divisors (100300980).

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

56951388 is a wasteful number, since it uses less digits than its factorization.

56951388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763 (or 1758 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 56951388 is about 7546.6143402191. The cubic root of 56951388 is about 384.7406765508.

The spelling of 56951388 in words is "fifty-six million, nine hundred fifty-one thousand, three hundred eighty-eight".