56573633 has 2 divisors, whose sum is σ = 56573634. Its totient is φ = 56573632.

The previous prime is 56573611. The next prime is 56573639. The reversal of 56573633 is 33637565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37063744 + 19509889 = 6088^2 + 4417^2 .

It is a cyclic number.

It is not a de Polignac number, because 56573633 - 2¹⁰ = 56572609 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (56573639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28286816 + 28286817.

It is an arithmetic number, because the mean of its divisors is an integer number (28286817).

Almost surely, 2^56573633 is an apocalyptic number.

It is an amenable number.

56573633 is a deficient number, since it is larger than the sum of its proper divisors (1).

56573633 is an equidigital number, since it uses as much as digits as its factorization.

56573633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170100, while the sum is 38.

The square root of 56573633 is about 7521.5445887131. The cubic root of 56573633 is about 383.8881351851. Note that the first 3 decimals are identical.

The spelling of 56573633 in words is "fifty-six million, five hundred seventy-three thousand, six hundred thirty-three".