57145615 has 4 divisors (see below), whose sum is σ = 68574744. Its totient is φ = 45716488.

The previous prime is 57145603. The next prime is 57145657. The reversal of 57145615 is 51654175.

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 57145615 - 2²¹ = 55048463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 5714557 + ... + 5714566.

It is an arithmetic number, because the mean of its divisors is an integer number (17143686).

Almost surely, 2^57145615 is an apocalyptic number.

57145615 is a deficient number, since it is larger than the sum of its proper divisors (11429129).

57145615 is a wasteful number, since it uses less digits than its factorization.

57145615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11429128.

The product of its digits is 21000, while the sum is 34.

The square root of 57145615 is about 7559.4718730874. The cubic root of 57145615 is about 385.1775534554.

The spelling of 57145615 in words is "fifty-seven million, one hundred forty-five thousand, six hundred fifteen".