56221250 has 40 divisors (see below), whose sum is σ = 108049788. Its totient is φ = 21920000.

The previous prime is 56221213. The next prime is 56221273. The reversal of 56221250 is 5212265.

It can be written as a sum of positive squares in 10 ways, for example, as 22080601 + 34140649 = 4699^2 + 5843^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 50702 + ... + 51798.

Almost surely, 2^56221250 is an apocalyptic number.

56221250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

56221250 is a deficient number, since it is larger than the sum of its proper divisors (51828538).

56221250 is a wasteful number, since it uses less digits than its factorization.

56221250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 56221250 is about 7498.0830883633. The cubic root of 56221250 is about 383.0894268612.

It can be divided in two parts, 562 and 21250, that added together give a palindrome (21812).

The spelling of 56221250 in words is "fifty-six million, two hundred twenty-one thousand, two hundred fifty".