57156822 has 48 divisors (see below), whose sum is σ = 132099552. Its totient is φ = 17798400.

The previous prime is 57156821. The next prime is 57156859. The reversal of 57156822 is 22865175.

It is a happy number.

57156822 is a `hidden beast` number, since 5 + 71 + 568 + 22 = 666.

It is a super-2 number, since 2×57156822² = 6533804602279368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57156821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45588 + ... + 46824.

It is an arithmetic number, because the mean of its divisors is an integer number (2752074).

Almost surely, 2^57156822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57156822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66049776).

57156822 is an abundant number, since it is smaller than the sum of its proper divisors (74942730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57156822 is a wasteful number, since it uses less digits than its factorization.

57156822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413 (or 1410 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 57156822 is about 7560.2130922349. The cubic root of 57156822 is about 385.2027312559.

The spelling of 57156822 in words is "fifty-seven million, one hundred fifty-six thousand, eight hundred twenty-two".