56981941 has 2 divisors, whose sum is σ = 56981942. Its totient is φ = 56981940.

The previous prime is 56981927. The next prime is 56981957. The reversal of 56981941 is 14918965.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39425841 + 17556100 = 6279^2 + 4190^2 .

It is a cyclic number.

It is not a de Polignac number, because 56981941 - 2⁹ = 56981429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56981341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28490970 + 28490971.

It is an arithmetic number, because the mean of its divisors is an integer number (28490971).

Almost surely, 2^56981941 is an apocalyptic number.

It is an amenable number.

56981941 is a deficient number, since it is larger than the sum of its proper divisors (1).

56981941 is an equidigital number, since it uses as much as digits as its factorization.

56981941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 43.

The square root of 56981941 is about 7548.6383540345. The cubic root of 56981941 is about 384.8094655119.

The spelling of 56981941 in words is "fifty-six million, nine hundred eighty-one thousand, nine hundred forty-one".