57116155 has 4 divisors (see below), whose sum is σ = 68539392. Its totient is φ = 45692920.

The previous prime is 57116119. The next prime is 57116159. The reversal of 57116155 is 55161175.

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

It is not a de Polignac number, because 57116155 - 2¹⁵ = 57083387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57116159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5711611 + ... + 5711620.

It is an arithmetic number, because the mean of its divisors is an integer number (17134848).

Almost surely, 2^57116155 is an apocalyptic number.

57116155 is a deficient number, since it is larger than the sum of its proper divisors (11423237).

57116155 is a wasteful number, since it uses less digits than its factorization.

57116155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11423236.

The product of its digits is 5250, while the sum is 31.

The square root of 57116155 is about 7557.5230730710. The cubic root of 57116155 is about 385.1113525099. Note that the first 3 decimals are identical.

The spelling of 57116155 in words is "fifty-seven million, one hundred sixteen thousand, one hundred fifty-five".