572554661 has 12 divisors (see below), whose sum is σ = 667108620. Its totient is φ = 489968640.

The previous prime is 572554651. The next prime is 572554669. The reversal of 572554661 is 166455275.

It can be written as a sum of positive squares in 2 ways, for example, as 555497761 + 17056900 = 23569^2 + 4130^2 .

It is not a de Polignac number, because 572554661 - 2²⁶ = 505445797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (572554669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22295 + ... + 40523.

It is an arithmetic number, because the mean of its divisors is an integer number (55592385).

Almost surely, 2^572554661 is an apocalyptic number.

It is an amenable number.

572554661 is a deficient number, since it is larger than the sum of its proper divisors (94553959).

572554661 is a wasteful number, since it uses less digits than its factorization.

572554661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18884 (or 18877 counting only the distinct ones).

The product of its digits is 252000, while the sum is 41.

The square root of 572554661 is about 23928.1144472355. The cubic root of 572554661 is about 830.3712767751.

It can be divided in two parts, 57255 and 4661, that added together give a palindrome (61916).

The spelling of 572554661 in words is "five hundred seventy-two million, five hundred fifty-four thousand, six hundred sixty-one".