56361577 has 2 divisors, whose sum is σ = 56361578. Its totient is φ = 56361576.

The previous prime is 56361553. The next prime is 56361583. The reversal of 56361577 is 77516365.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40908816 + 15452761 = 6396^2 + 3931^2 .

It is a cyclic number.

It is not a de Polignac number, because 56361577 - 2¹⁵ = 56328809 is a prime.

It is not a weakly prime, because it can be changed into another prime (56361517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28180788 + 28180789.

It is an arithmetic number, because the mean of its divisors is an integer number (28180789).

Almost surely, 2^56361577 is an apocalyptic number.

It is an amenable number.

56361577 is a deficient number, since it is larger than the sum of its proper divisors (1).

56361577 is an equidigital number, since it uses as much as digits as its factorization.

56361577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 132300, while the sum is 40.

The square root of 56361577 is about 7507.4347816015. The cubic root of 56361577 is about 383.4078896360.

The spelling of 56361577 in words is "fifty-six million, three hundred sixty-one thousand, five hundred seventy-seven".