56764553 has 2 divisors, whose sum is σ = 56764554. Its totient is φ = 56764552.

The previous prime is 56764523. The next prime is 56764559. The reversal of 56764553 is 35546765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28430224 + 28334329 = 5332^2 + 5323^2 .

It is a cyclic number.

It is not a de Polignac number, because 56764553 - 2⁶ = 56764489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56764553.

It is not a weakly prime, because it can be changed into another prime (56764559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28382276 + 28382277.

It is an arithmetic number, because the mean of its divisors is an integer number (28382277).

Almost surely, 2^56764553 is an apocalyptic number.

It is an amenable number.

56764553 is a deficient number, since it is larger than the sum of its proper divisors (1).

56764553 is an equidigital number, since it uses as much as digits as its factorization.

56764553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 41.

The square root of 56764553 is about 7534.2254412780. The cubic root of 56764553 is about 384.3194882532.

The spelling of 56764553 in words is "fifty-six million, seven hundred sixty-four thousand, five hundred fifty-three".