57271390 has 16 divisors (see below), whose sum is σ = 112460400. Its totient is φ = 20825920.

The previous prime is 57271387. The next prime is 57271393. The reversal of 57271390 is 9317275.

It is an interprime number because it is at equal distance from previous prime (57271387) and next prime (57271393).

It is a super-2 number, since 2×57271390² = 6560024225064200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57271393) 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, 260215 + ... + 260434.

It is an arithmetic number, because the mean of its divisors is an integer number (7028775).

Almost surely, 2^57271390 is an apocalyptic number.

57271390 is a deficient number, since it is larger than the sum of its proper divisors (55189010).

57271390 is a wasteful number, since it uses less digits than its factorization.

57271390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520667.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 57271390 is about 7567.7863341931. The cubic root of 57271390 is about 385.4599327064.

It can be divided in two parts, 5727 and 1390, that added together give a palindrome (7117).

The spelling of 57271390 in words is "fifty-seven million, two hundred seventy-one thousand, three hundred ninety".