56669544 has 128 divisors (see below), whose sum is σ = 165312000. Its totient is φ = 18195840.

The previous prime is 56669537. The next prime is 56669563. The reversal of 56669544 is 44596665.

It is a super-2 number, since 2×56669544² = 6422874434335872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56669544.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 717297 + ... + 717375.

It is an arithmetic number, because the mean of its divisors is an integer number (1291500).

Almost surely, 2^56669544 is an apocalyptic number.

56669544 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56669544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82656000).

56669544 is an abundant number, since it is smaller than the sum of its proper divisors (108642456).

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

56669544 is an equidigital number, since it uses as much as digits as its factorization.

56669544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 125 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 56669544 is about 7527.9176403571. The cubic root of 56669544 is about 384.1049517816.

The spelling of 56669544 in words is "fifty-six million, six hundred sixty-nine thousand, five hundred forty-four".