87200523 has 8 divisors (see below), whose sum is σ = 129186000. Its totient is φ = 58133664.

The previous prime is 87200501. The next prime is 87200539. The reversal of 87200523 is 32500278.

It is not a de Polignac number, because 87200523 - 2⁶ = 87200459 is a prime.

It is a super-2 number, since 2×87200523² = 15207862422947058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3229649 = 87200523 / (8 + 7 + 2 + 0 + 0 + 5 + 2 + 3).

It is not an unprimeable number, because it can be changed into a prime (87200723) 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, 1614798 + ... + 1614851.

It is an arithmetic number, because the mean of its divisors is an integer number (16148250).

Almost surely, 2^87200523 is an apocalyptic number.

87200523 is a deficient number, since it is larger than the sum of its proper divisors (41985477).

87200523 is a wasteful number, since it uses less digits than its factorization.

87200523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229658 (or 3229652 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 87200523 is about 9338.1220274743. The cubic root of 87200523 is about 443.4449327406. Note that the first 3 decimals are identical.

The spelling of 87200523 in words is "eighty-seven million, two hundred thousand, five hundred twenty-three".