57135557 has 8 divisors (see below), whose sum is σ = 57615360. Its totient is φ = 56658240.

The previous prime is 57135553. The next prime is 57135569. The reversal of 57135557 is 75553175.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 57135557 - 2² = 57135553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57135557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57135553) 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, 91994 + ... + 92612.

It is an arithmetic number, because the mean of its divisors is an integer number (7201920).

Almost surely, 2^57135557 is an apocalyptic number.

It is an amenable number.

57135557 is a deficient number, since it is larger than the sum of its proper divisors (479803).

57135557 is a wasteful number, since it uses less digits than its factorization.

57135557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243.

The product of its digits is 91875, while the sum is 38.

The square root of 57135557 is about 7558.8065856986. The cubic root of 57135557 is about 385.1549542110.

The spelling of 57135557 in words is "fifty-seven million, one hundred thirty-five thousand, five hundred fifty-seven".