56452221 has 20 divisors (see below), whose sum is σ = 96377952. Its totient is φ = 32258088.

The previous prime is 56452219. The next prime is 56452247. The reversal of 56452221 is 12225465.

It is not a de Polignac number, because 56452221 - 2¹ = 56452219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56450221) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 49215 + ... + 50348.

Almost surely, 2^56452221 is an apocalyptic number.

It is an amenable number.

56452221 is a deficient number, since it is larger than the sum of its proper divisors (39925731).

56452221 is an equidigital number, since it uses as much as digits as its factorization.

56452221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99582 (or 99573 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 56452221 is about 7513.4693051879. The cubic root of 56452221 is about 383.6133192466.

Adding to 56452221 its reverse (12225465), we get a palindrome (68677686).

The spelling of 56452221 in words is "fifty-six million, four hundred fifty-two thousand, two hundred twenty-one".