56755240 has 16 divisors (see below), whose sum is σ = 127699380. Its totient is φ = 22702080.

The previous prime is 56755217. The next prime is 56755247. The reversal of 56755240 is 4255765.

It can be written as a sum of positive squares in 2 ways, for example, as 51638596 + 5116644 = 7186^2 + 2262^2 .

It is a junction number, because it is equal to n+sod(n) for n = 56755196 and 56755205.

It is not an unprimeable number, because it can be changed into a prime (56755247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 709401 + ... + 709480.

Almost surely, 2^56755240 is an apocalyptic number.

It is an amenable number.

56755240 is an abundant number, since it is smaller than the sum of its proper divisors (70944140).

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

56755240 is a wasteful number, since it uses less digits than its factorization.

56755240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418892 (or 1418888 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 56755240 is about 7533.6073696470. The cubic root of 56755240 is about 384.2984694838.

The spelling of 56755240 in words is "fifty-six million, seven hundred fifty-five thousand, two hundred forty".