572261617 has 4 divisors (see below), whose sum is σ = 583059060. Its totient is φ = 561464176.

The previous prime is 572261609. The next prime is 572261629. The reversal of 572261617 is 716162275.

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

It can be written as a sum of positive squares in 2 ways, for example, as 136328976 + 435932641 = 11676^2 + 20879^2 .

It is a cyclic number.

It is not a de Polignac number, because 572261617 - 2³ = 572261609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (572261687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5398642 + ... + 5398747.

It is an arithmetic number, because the mean of its divisors is an integer number (145764765).

Almost surely, 2^572261617 is an apocalyptic number.

It is an amenable number.

572261617 is a deficient number, since it is larger than the sum of its proper divisors (10797443).

572261617 is a wasteful number, since it uses less digits than its factorization.

572261617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10797442.

The product of its digits is 35280, while the sum is 37.

The square root of 572261617 is about 23921.9902391085. The cubic root of 572261617 is about 830.2295861714.

The spelling of 572261617 in words is "five hundred seventy-two million, two hundred sixty-one thousand, six hundred seventeen".