56281020 has 24 divisors (see below), whose sum is σ = 157587024. Its totient is φ = 15008256.

The previous prime is 56281013. The next prime is 56281031. The reversal of 56281020 is 2018265.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468949 + ... + 469068.

It is an arithmetic number, because the mean of its divisors is an integer number (6566126).

Almost surely, 2^56281020 is an apocalyptic number.

It is an amenable number.

56281020 is an abundant number, since it is smaller than the sum of its proper divisors (101306004).

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

56281020 is a wasteful number, since it uses less digits than its factorization.

56281020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938029 (or 938027 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 56281020 is about 7502.0677149703. The cubic root of 56281020 is about 383.2251356051.

Adding to 56281020 its reverse (2018265), we get a palindrome (58299285).

The spelling of 56281020 in words is "fifty-six million, two hundred eighty-one thousand, twenty".