56755553 has 2 divisors, whose sum is σ = 56755554. Its totient is φ = 56755552.

The previous prime is 56755549. The next prime is 56755579. The reversal of 56755553 is 35555765.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38291344 + 18464209 = 6188^2 + 4297^2 .

It is a cyclic number.

It is not a de Polignac number, because 56755553 - 2² = 56755549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56755553.

It is not a weakly prime, because it can be changed into another prime (56755253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28377776 + 28377777.

It is an arithmetic number, because the mean of its divisors is an integer number (28377777).

Almost surely, 2^56755553 is an apocalyptic number.

It is an amenable number.

56755553 is a deficient number, since it is larger than the sum of its proper divisors (1).

56755553 is an equidigital number, since it uses as much as digits as its factorization.

56755553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 393750, while the sum is 41.

The square root of 56755553 is about 7533.6281431990. The cubic root of 56755553 is about 384.2991759396.

The spelling of 56755553 in words is "fifty-six million, seven hundred fifty-five thousand, five hundred fifty-three".