872515 has 16 divisors (see below), whose sum is σ = 1213632. Its totient is φ = 589824.

The previous prime is 872479. The next prime is 872533. The reversal of 872515 is 515278.

It is a 16-Lehmer number, since φ(872515) divides (872515-1)¹⁶.

It is a cyclic number.

It is not a de Polignac number, because 872515 - 2⁷ = 872387 is a prime.

It is a super-2 number, since 2×872515² = 1522564850450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3267 + ... + 3523.

It is an arithmetic number, because the mean of its divisors is an integer number (75852).

2⁸⁷²⁵¹⁵ is an apocalyptic number.

872515 is a deficient number, since it is larger than the sum of its proper divisors (341117).

872515 is a wasteful number, since it uses less digits than its factorization.

872515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366.

The product of its digits is 2800, while the sum is 28.

The square root of 872515 is about 934.0851138949. The cubic root of 872515 is about 95.5559278775. Note that the first 3 decimals are identical.

The spelling of 872515 in words is "eight hundred seventy-two thousand, five hundred fifteen".