87504251 has 4 divisors (see below), whose sum is σ = 87623400. Its totient is φ = 87385104.

The previous prime is 87504203. The next prime is 87504311. The reversal of 87504251 is 15240578.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15240578 = 2 ⋅7620289.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87504251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87504451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58466 + ... + 59943.

It is an arithmetic number, because the mean of its divisors is an integer number (21905850).

Almost surely, 2^87504251 is an apocalyptic number.

87504251 is a deficient number, since it is larger than the sum of its proper divisors (119149).

87504251 is a wasteful number, since it uses less digits than its factorization.

87504251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119148.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 87504251 is about 9354.3706896830. The cubic root of 87504251 is about 443.9591902404.

The spelling of 87504251 in words is "eighty-seven million, five hundred four thousand, two hundred fifty-one".