56649888 has 96 divisors (see below), whose sum is σ = 166622400. Its totient is φ = 18724608.

The previous prime is 56649871. The next prime is 56649889. The reversal of 56649888 is 88894665.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (56649889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149283 + ... + 149661.

It is an arithmetic number, because the mean of its divisors is an integer number (1735650).

Almost surely, 2^56649888 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 56649888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83311200).

56649888 is an abundant number, since it is smaller than the sum of its proper divisors (109972512).

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

56649888 is a wasteful number, since it uses less digits than its factorization.

56649888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571 (or 557 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 56649888 is about 7526.6119868105. The cubic root of 56649888 is about 384.0605373308.

The spelling of 56649888 in words is "fifty-six million, six hundred forty-nine thousand, eight hundred eighty-eight".