56227921 has 2 divisors, whose sum is σ = 56227922. Its totient is φ = 56227920.

The previous prime is 56227903. The next prime is 56227943. The reversal of 56227921 is 12972265.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36300625 + 19927296 = 6025^2 + 4464^2 .

It is a cyclic number.

It is not a de Polignac number, because 56227921 - 2¹⁷ = 56096849 is a prime.

It is a super-3 number, since 3×56227921³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (56227021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28113960 + 28113961.

It is an arithmetic number, because the mean of its divisors is an integer number (28113961).

Almost surely, 2^56227921 is an apocalyptic number.

It is an amenable number.

56227921 is a deficient number, since it is larger than the sum of its proper divisors (1).

56227921 is an equidigital number, since it uses as much as digits as its factorization.

56227921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 34.

The square root of 56227921 is about 7498.5279221991. The cubic root of 56227921 is about 383.1045782408.

The spelling of 56227921 in words is "fifty-six million, two hundred twenty-seven thousand, nine hundred twenty-one".