56648856 has 64 divisors (see below), whose sum is σ = 156297600. Its totient is φ = 16966400.

The previous prime is 56648849. The next prime is 56648863. The reversal of 56648856 is 65884665.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (56648849) and next prime (56648863).

It is a super-2 number, since 2×56648856² = 6418185772217472, which contains 22 as substring.

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, 22291 + ... + 24701.

It is an arithmetic number, because the mean of its divisors is an integer number (2442150).

Almost surely, 2^56648856 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 56648856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78148800).

56648856 is an abundant number, since it is smaller than the sum of its proper divisors (99648744).

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

56648856 is a wasteful number, since it uses less digits than its factorization.

56648856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520 (or 2516 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 48.

The square root of 56648856 is about 7526.5434297558. The cubic root of 56648856 is about 384.0582051527.

The spelling of 56648856 in words is "fifty-six million, six hundred forty-eight thousand, eight hundred fifty-six".