56545400 has 48 divisors (see below), whose sum is σ = 139209840. Its totient is φ = 21286400.

The previous prime is 56545399. The next prime is 56545403. The reversal of 56545400 is 454565.

It is a super-2 number, since 2×56545400² = 6394764522320000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56545403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4916 + ... + 11715.

It is an arithmetic number, because the mean of its divisors is an integer number (2900205).

Almost surely, 2^56545400 is an apocalyptic number.

56545400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56545400 is an abundant number, since it is smaller than the sum of its proper divisors (82664440).

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

56545400 is a wasteful number, since it uses less digits than its factorization.

56545400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16664 (or 16655 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 56545400 is about 7519.6675458427. The cubic root of 56545400 is about 383.8242649297.

Adding to 56545400 its reverse (454565), we get a palindrome (56999965).

The spelling of 56545400 in words is "fifty-six million, five hundred forty-five thousand, four hundred".