56775553 has 6 divisors (see below), whose sum is σ = 59921394. Its totient is φ = 53787024.

The previous prime is 56775541. The next prime is 56775559. The reversal of 56775553 is 35557765.

It can be written as a sum of positive squares in only one way, i.e., 43467649 + 13307904 = 6593^2 + 3648^2 .

It is not a de Polignac number, because 56775553 - 2¹⁷ = 56644481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56775559) 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 in 5 ways as a sum of consecutive naturals, for example, 78276 + ... + 78997.

It is an arithmetic number, because the mean of its divisors is an integer number (9986899).

Almost surely, 2^56775553 is an apocalyptic number.

It is an amenable number.

56775553 is a deficient number, since it is larger than the sum of its proper divisors (3145841).

56775553 is a wasteful number, since it uses less digits than its factorization.

56775553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157311 (or 157292 counting only the distinct ones).

The product of its digits is 551250, while the sum is 43.

The square root of 56775553 is about 7534.9554079636. The cubic root of 56775553 is about 384.3443114988.

The spelling of 56775553 in words is "fifty-six million, seven hundred seventy-five thousand, five hundred fifty-three".