572752921 has 8 divisors (see below), whose sum is σ = 622919304. Its totient is φ = 523459200.

The previous prime is 572752919. The next prime is 572752937. The reversal of 572752921 is 129257275.

It can be written as a sum of positive squares in 4 ways, for example, as 304153600 + 268599321 = 17440^2 + 16389^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 572752921 - 2¹ = 572752919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (572752981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216796 + ... + 219421.

It is an arithmetic number, because the mean of its divisors is an integer number (77864913).

Almost surely, 2^572752921 is an apocalyptic number.

It is an amenable number.

572752921 is a deficient number, since it is larger than the sum of its proper divisors (50166383).

572752921 is a wasteful number, since it uses less digits than its factorization.

572752921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436331.

The product of its digits is 88200, while the sum is 40.

The square root of 572752921 is about 23932.2569140480. The cubic root of 572752921 is about 830.4671106591.

The spelling of 572752921 in words is "five hundred seventy-two million, seven hundred fifty-two thousand, nine hundred twenty-one".