572781 has 16 divisors (see below), whose sum is σ = 883008. Its totient is φ = 326400.

The previous prime is 572777. The next prime is 572791. The reversal of 572781 is 187275.

It is a happy number.

It is not a de Polignac number, because 572781 - 2² = 572777 is a prime.

It is a super-2 number, since 2×572781² = 656156147922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (572711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51 + ... + 1071.

It is an arithmetic number, because the mean of its divisors is an integer number (55188).

2⁵⁷²⁷⁸¹ is an apocalyptic number.

572781 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

572781 is a deficient number, since it is larger than the sum of its proper divisors (310227).

572781 is a wasteful number, since it uses less digits than its factorization.

572781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052.

The product of its digits is 3920, while the sum is 30.

The square root of 572781 is about 756.8229647679. The cubic root of 572781 is about 83.0480681552.

The spelling of 572781 in words is "five hundred seventy-two thousand, seven hundred eighty-one".