57015394 has 4 divisors (see below), whose sum is σ = 85523094. Its totient is φ = 28507696.

The previous prime is 57015391. The next prime is 57015397. The reversal of 57015394 is 49351075.

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

It is an interprime number because it is at equal distance from previous prime (57015391) and next prime (57015397).

It can be written as a sum of positive squares in only one way, i.e., 52751169 + 4264225 = 7263^2 + 2065^2 .

It is not an unprimeable number, because it can be changed into a prime (57015391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14253847 + ... + 14253850.

Almost surely, 2^57015394 is an apocalyptic number.

57015394 is a deficient number, since it is larger than the sum of its proper divisors (28507700).

57015394 is a wasteful number, since it uses less digits than its factorization.

57015394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28507699.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 57015394 is about 7550.8538590016. The cubic root of 57015394 is about 384.8847555218.

The spelling of 57015394 in words is "fifty-seven million, fifteen thousand, three hundred ninety-four".