57666553 has 8 divisors (see below), whose sum is σ = 66119040. Its totient is φ = 49267680.

The previous prime is 57666547. The next prime is 57666563. The reversal of 57666553 is 35566675.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57666553 - 2¹³ = 57658361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57666563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11068 + ... + 15421.

It is an arithmetic number, because the mean of its divisors is an integer number (8264880).

Almost surely, 2^57666553 is an apocalyptic number.

It is an amenable number.

57666553 is a deficient number, since it is larger than the sum of its proper divisors (8452487).

57666553 is a wasteful number, since it uses less digits than its factorization.

57666553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26807.

The product of its digits is 567000, while the sum is 43.

The square root of 57666553 is about 7593.8496824733. The cubic root of 57666553 is about 386.3444378306.

The spelling of 57666553 in words is "fifty-seven million, six hundred sixty-six thousand, five hundred fifty-three".