57361657 has 4 divisors (see below), whose sum is σ = 58006260. Its totient is φ = 56717056.

The previous prime is 57361651. The next prime is 57361669. The reversal of 57361657 is 75616375.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12257001 + 45104656 = 3501^2 + 6716^2 .

It is a cyclic number.

It is not a de Polignac number, because 57361657 - 2³ = 57361649 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57361651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322168 + ... + 322345.

It is an arithmetic number, because the mean of its divisors is an integer number (14501565).

Almost surely, 2^57361657 is an apocalyptic number.

It is an amenable number.

57361657 is a deficient number, since it is larger than the sum of its proper divisors (644603).

57361657 is an equidigital number, since it uses as much as digits as its factorization.

57361657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644602.

The product of its digits is 132300, while the sum is 40.

The square root of 57361657 is about 7573.7478833138. The cubic root of 57361657 is about 385.6623377097.

The spelling of 57361657 in words is "fifty-seven million, three hundred sixty-one thousand, six hundred fifty-seven".