872557 has 8 divisors (see below), whose sum is σ = 1029632. Its totient is φ = 723600.

The previous prime is 872549. The next prime is 872561. The reversal of 872557 is 755278.

872557 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 872557 - 2³ = 872549 is a prime.

It is a super-2 number, since 2×872557² = 1522711436498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872567) 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, 1794 + ... + 2227.

It is an arithmetic number, because the mean of its divisors is an integer number (128704).

2⁸⁷²⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

872557 is a deficient number, since it is larger than the sum of its proper divisors (157075).

872557 is a wasteful number, since it uses less digits than its factorization.

872557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4059.

The product of its digits is 19600, while the sum is 34.

The square root of 872557 is about 934.1075955156. The cubic root of 872557 is about 95.5574611022.

The spelling of 872557 in words is "eight hundred seventy-two thousand, five hundred fifty-seven".