57223831 has 8 divisors (see below), whose sum is σ = 65816480. Its totient is φ = 48735648.

The previous prime is 57223781. The next prime is 57223847. The reversal of 57223831 is 13832275.

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 57223831 - 2⁹ = 57223319 is a prime.

It is a super-2 number, since 2×57223831² = 6549133668633122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57223793 and 57223802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57223871) 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, 24936 + ... + 27133.

It is an arithmetic number, because the mean of its divisors is an integer number (8227060).

Almost surely, 2^57223831 is an apocalyptic number.

57223831 is a deficient number, since it is larger than the sum of its proper divisors (8592649).

57223831 is a wasteful number, since it uses less digits than its factorization.

57223831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52233.

The product of its digits is 10080, while the sum is 31.

The square root of 57223831 is about 7564.6434813546. The cubic root of 57223831 is about 385.3532059696.

The spelling of 57223831 in words is "fifty-seven million, two hundred twenty-three thousand, eight hundred thirty-one".