572021697 has 16 divisors (see below), whose sum is σ = 835289280. Its totient is φ = 346045632.

The previous prime is 572021689. The next prime is 572021713. The reversal of 572021697 is 796120275.

It is not a de Polignac number, because 572021697 - 2³ = 572021689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (572021617) 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, 121998 + ... + 126599.

It is an arithmetic number, because the mean of its divisors is an integer number (52205580).

Almost surely, 2^572021697 is an apocalyptic number.

It is an amenable number.

572021697 is a deficient number, since it is larger than the sum of its proper divisors (263267583).

572021697 is a wasteful number, since it uses less digits than its factorization.

572021697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248672.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 572021697 is about 23916.9750804737. The cubic root of 572021697 is about 830.1135456989.

The spelling of 572021697 in words is "five hundred seventy-two million, twenty-one thousand, six hundred ninety-seven".