57017139 has 8 divisors (see below), whose sum is σ = 76224960. Its totient is φ = 37910376.

The previous prime is 57017131. The next prime is 57017143. The reversal of 57017139 is 93171075.

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

It is not a de Polignac number, because 57017139 - 2³ = 57017131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57017131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23937 + ... + 26210.

It is an arithmetic number, because the mean of its divisors is an integer number (9528120).

Almost surely, 2^57017139 is an apocalyptic number.

57017139 is a deficient number, since it is larger than the sum of its proper divisors (19207821).

57017139 is a wasteful number, since it uses less digits than its factorization.

57017139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50529.

The product of its (nonzero) digits is 6615, while the sum is 33.

The square root of 57017139 is about 7550.9694079635. The cubic root of 57017139 is about 384.8886820464. Note that the first 3 decimals are identical.

The spelling of 57017139 in words is "fifty-seven million, seventeen thousand, one hundred thirty-nine".