57142271 has 8 divisors (see below), whose sum is σ = 58613760. Its totient is φ = 55681528.

The previous prime is 57142231. The next prime is 57142279. The reversal of 57142271 is 17224175.

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

It is a cyclic number.

It is not a de Polignac number, because 57142271 - 2¹⁰ = 57141247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57142279) 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, 8690 + ... + 13776.

It is an arithmetic number, because the mean of its divisors is an integer number (7326720).

Almost surely, 2^57142271 is an apocalyptic number.

57142271 is a deficient number, since it is larger than the sum of its proper divisors (1471489).

57142271 is a wasteful number, since it uses less digits than its factorization.

57142271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5373.

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

The square root of 57142271 is about 7559.2506903793. The cubic root of 57142271 is about 385.1700401413.

The spelling of 57142271 in words is "fifty-seven million, one hundred forty-two thousand, two hundred seventy-one".