572172261 has 8 divisors (see below), whose sum is σ = 781503744. Its totient is φ = 372144480.

The previous prime is 572172257. The next prime is 572172269. The reversal of 572172261 is 162271275.

572172261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 572172261 - 2² = 572172257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (572172269) 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, 2325781 + ... + 2326026.

It is an arithmetic number, because the mean of its divisors is an integer number (97687968).

Almost surely, 2^572172261 is an apocalyptic number.

It is an amenable number.

572172261 is a deficient number, since it is larger than the sum of its proper divisors (209331483).

572172261 is a wasteful number, since it uses less digits than its factorization.

572172261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4651851.

The product of its digits is 11760, while the sum is 33.

The square root of 572172261 is about 23920.1225122281. The cubic root of 572172261 is about 830.1863717544.

The spelling of 572172261 in words is "five hundred seventy-two million, one hundred seventy-two thousand, two hundred sixty-one".