2572216761 has 8 divisors (see below), whose sum is σ = 3430170720. Its totient is φ = 1714536992.

The previous prime is 2572216747. The next prime is 2572216769. The reversal of 2572216761 is 1676122752.

2572216761 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 a cyclic number.

It is not a de Polignac number, because 2572216761 - 2⁶ = 2572216697 is a prime.

It is a super-2 number, since 2×2572216761² = 13232598131138662242, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2572216769) 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, 45555 + ... + 84968.

It is an arithmetic number, because the mean of its divisors is an integer number (428771340).

Almost surely, 2^2572216761 is an apocalyptic number.

It is an amenable number.

2572216761 is a deficient number, since it is larger than the sum of its proper divisors (857953959).

2572216761 is a wasteful number, since it uses less digits than its factorization.

2572216761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137095.

The product of its digits is 70560, while the sum is 39.

The square root of 2572216761 is about 50717.0263422453. The cubic root of 2572216761 is about 1370.1533848901.

The spelling of 2572216761 in words is "two billion, five hundred seventy-two million, two hundred sixteen thousand, seven hundred sixty-one".