56577381541 has 2 divisors, whose sum is σ = 56577381542. Its totient is φ = 56577381540.

The previous prime is 56577381533. The next prime is 56577381557. The reversal of 56577381541 is 14518377565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47119819041 + 9457562500 = 217071^2 + 97250^2 .

It is a cyclic number.

It is not a de Polignac number, because 56577381541 - 2³ = 56577381533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56577381241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28288690770 + 28288690771.

It is an arithmetic number, because the mean of its divisors is an integer number (28288690771).

Almost surely, 2^56577381541 is an apocalyptic number.

It is an amenable number.

56577381541 is a deficient number, since it is larger than the sum of its proper divisors (1).

56577381541 is an equidigital number, since it uses as much as digits as its factorization.

56577381541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528000, while the sum is 52.

The spelling of 56577381541 in words is "fifty-six billion, five hundred seventy-seven million, three hundred eighty-one thousand, five hundred forty-one".