573562360921 has 21 divisors (see below), whose sum is σ = 632029333327. Its totient is φ = 520503947920.

The previous prime is 573562360913. The next prime is 573562360937. The reversal of 573562360921 is 129063265375.

The square root of 573562360921 is 757339.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 94532266521 + 479030094400 = 307461^2 + 692120^2 .

It is not a de Polignac number, because 573562360921 - 2³ = 573562360913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (573562360121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 1008017925 + ... + 1008018493.

Almost surely, 2^573562360921 is an apocalyptic number.

573562360921 is the 757339-th square number.

573562360921 is the 378670-th centered octagonal number.

It is an amenable number.

573562360921 is a deficient number, since it is larger than the sum of its proper divisors (58466972406).

573562360921 is an frugal number, since it uses more digits than its factorization.

573562360921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 49.

Multiplying 573562360921 by its sum of digits (49), we get a square (28104555685129 = 5301373²).

The spelling of 573562360921 in words is "five hundred seventy-three billion, five hundred sixty-two million, three hundred sixty thousand, nine hundred twenty-one".