57115 has 4 divisors (see below), whose sum is σ = 68544. Its totient is φ = 45688.

The previous prime is 57107. The next prime is 57119. The reversal of 57115 is 51175.

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

It is a cyclic number.

It is not a de Polignac number, because 57115 - 2³ = 57107 is a prime.

It is a Duffinian number.

57115 is a lucky number.

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 57092 and 57101.

It is not an unprimeable number, because it can be changed into a prime (57119) 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 3 ways as a sum of consecutive naturals, for example, 5707 + ... + 5716.

It is an arithmetic number, because the mean of its divisors is an integer number (17136).

2⁵⁷¹¹⁵ is an apocalyptic number.

57115 is a deficient number, since it is larger than the sum of its proper divisors (11429).

57115 is a wasteful number, since it uses less digits than its factorization.

57115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11428.

The product of its digits is 175, while the sum is 19.

The square root of 57115 is about 238.9874473691. The cubic root of 57115 is about 38.5108756592.

It can be divided in two parts, 57 and 115, that multiplied together give a triangular number (6555 = T₁₁₄).

The spelling of 57115 in words is "fifty-seven thousand, one hundred fifteen".