56754840 has 128 divisors (see below), whose sum is σ = 184757760. Its totient is φ = 13891584.

The previous prime is 56754821. The next prime is 56754847. The reversal of 56754840 is 4845765.

It is a super-2 number, since 2×56754840² = 6442223726851200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56754847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87397 + ... + 88043.

It is an arithmetic number, because the mean of its divisors is an integer number (1443420).

Almost surely, 2^56754840 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 56754840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92378880).

56754840 is an abundant number, since it is smaller than the sum of its proper divisors (128002920).

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

56754840 is a wasteful number, since it uses less digits than its factorization.

56754840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 56754840 is about 7533.5808218934. The cubic root of 56754840 is about 384.2975666611.

The spelling of 56754840 in words is "fifty-six million, seven hundred fifty-four thousand, eight hundred forty".