56938621 has 2 divisors, whose sum is σ = 56938622. Its totient is φ = 56938620.

The previous prime is 56938601. The next prime is 56938631. The reversal of 56938621 is 12683965.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54096025 + 2842596 = 7355^2 + 1686^2 .

It is a cyclic number.

It is not a de Polignac number, because 56938621 - 2⁹ = 56938109 is a prime.

It is a super-2 number, since 2×56938621² = 6484013122763282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56938601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28469310 + 28469311.

It is an arithmetic number, because the mean of its divisors is an integer number (28469311).

Almost surely, 2^56938621 is an apocalyptic number.

It is an amenable number.

56938621 is a deficient number, since it is larger than the sum of its proper divisors (1).

56938621 is an equidigital number, since it uses as much as digits as its factorization.

56938621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 40.

The square root of 56938621 is about 7545.7684168016. The cubic root of 56938621 is about 384.7119248295.

The spelling of 56938621 in words is "fifty-six million, nine hundred thirty-eight thousand, six hundred twenty-one".