57217142 has 8 divisors (see below), whose sum is σ = 87651936. Its totient is φ = 27999832.

The previous prime is 57217109. The next prime is 57217159. The reversal of 57217142 is 24171275.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304253 + ... + 304440.

It is an arithmetic number, because the mean of its divisors is an integer number (10956492).

Almost surely, 2^57217142 is an apocalyptic number.

57217142 is a deficient number, since it is larger than the sum of its proper divisors (30434794).

57217142 is a wasteful number, since it uses less digits than its factorization.

57217142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608742.

The product of its digits is 3920, while the sum is 29.

The square root of 57217142 is about 7564.2013458131. The cubic root of 57217142 is about 385.3381905003.

The spelling of 57217142 in words is "fifty-seven million, two hundred seventeen thousand, one hundred forty-two".