572057721 has 36 divisors (see below), whose sum is σ = 871009776. Its totient is φ = 375195240.

The previous prime is 572057713. The next prime is 572057737. The reversal of 572057721 is 127750275.

It is not a de Polignac number, because 572057721 - 2³ = 572057713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (572057221) 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 35 ways as a sum of consecutive naturals, for example, 1224730 + ... + 1225196.

It is an arithmetic number, because the mean of its divisors is an integer number (24194716).

Almost surely, 2^572057721 is an apocalyptic number.

It is an amenable number.

572057721 is a deficient number, since it is larger than the sum of its proper divisors (298952055).

572057721 is an frugal number, since it uses more digits than its factorization.

572057721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 34300, while the sum is 36.

The square root of 572057721 is about 23917.7281738881. The cubic root of 572057721 is about 830.1309712516.

The spelling of 572057721 in words is "five hundred seventy-two million, fifty-seven thousand, seven hundred twenty-one".