56655420 has 24 divisors (see below), whose sum is σ = 158635344. Its totient is φ = 15108096.

The previous prime is 56655409. The next prime is 56655421. The reversal of 56655420 is 2455665.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56655421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472069 + ... + 472188.

It is an arithmetic number, because the mean of its divisors is an integer number (6609806).

Almost surely, 2^56655420 is an apocalyptic number.

It is an amenable number.

56655420 is an abundant number, since it is smaller than the sum of its proper divisors (101979924).

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

56655420 is a wasteful number, since it uses less digits than its factorization.

56655420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944269 (or 944267 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 56655420 is about 7526.9794738660. The cubic root of 56655420 is about 384.0730384073.

It can be divided in two parts, 56655 and 420, that added together give a palindrome (57075).

The spelling of 56655420 in words is "fifty-six million, six hundred fifty-five thousand, four hundred twenty".