57505505 has 8 divisors (see below), whose sum is σ = 69102312. Its totient is φ = 45940608.

The previous prime is 57505499. The next prime is 57505523. The reversal of 57505505 is 50550575.

57505505 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in 4 ways, for example, as 24373969 + 33131536 = 4937^2 + 5756^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57505505 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3812 + ... + 11381.

It is an arithmetic number, because the mean of its divisors is an integer number (8637789).

Almost surely, 2^57505505 is an apocalyptic number.

It is an amenable number.

57505505 is a deficient number, since it is larger than the sum of its proper divisors (11596807).

57505505 is a wasteful number, since it uses less digits than its factorization.

57505505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15955.

The product of its (nonzero) digits is 21875, while the sum is 32.

The square root of 57505505 is about 7583.2384243145. The cubic root of 57505505 is about 385.9844486204.

The spelling of 57505505 in words is "fifty-seven million, five hundred five thousand, five hundred five".