572015491 has 4 divisors (see below), whose sum is σ = 573180984. Its totient is φ = 570850000.

The previous prime is 572015461. The next prime is 572015513. The reversal of 572015491 is 194510275.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 572015491 - 2⁷ = 572015363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (572015461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582010 + ... + 582991.

It is an arithmetic number, because the mean of its divisors is an integer number (143295246).

Almost surely, 2^572015491 is an apocalyptic number.

572015491 is a deficient number, since it is larger than the sum of its proper divisors (1165493).

572015491 is a wasteful number, since it uses less digits than its factorization.

572015491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165492.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 572015491 is about 23916.8453396346. The cubic root of 572015491 is about 830.1105436547.

The spelling of 572015491 in words is "five hundred seventy-two million, fifteen thousand, four hundred ninety-one".