872564533 has 4 divisors (see below), whose sum is σ = 900711808. Its totient is φ = 844417260.

The previous prime is 872564521. The next prime is 872564543. The reversal of 872564533 is 335465278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 335465278 = 2 ⋅167732639.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-872564533 is a prime.

It is a super-2 number, since 2×872564533² = 1522737728499016178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 872564533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872564543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14073591 + ... + 14073652.

It is an arithmetic number, because the mean of its divisors is an integer number (225177952).

Almost surely, 2^872564533 is an apocalyptic number.

It is an amenable number.

872564533 is a deficient number, since it is larger than the sum of its proper divisors (28147275).

872564533 is a wasteful number, since it uses less digits than its factorization.

872564533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28147274.

The product of its digits is 604800, while the sum is 43.

The square root of 872564533 is about 29539.2033237188. The cubic root of 872564533 is about 955.5773609175.

The spelling of 872564533 in words is "eight hundred seventy-two million, five hundred sixty-four thousand, five hundred thirty-three".