87200521 has 8 divisors (see below), whose sum is σ = 91877760. Its totient is φ = 82597152.

The previous prime is 87200501. The next prime is 87200539. The reversal of 87200521 is 12500278.

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 87200521 - 2¹⁷ = 87069449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87200501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16036 + ... + 20773.

It is an arithmetic number, because the mean of its divisors is an integer number (11484720).

Almost surely, 2^87200521 is an apocalyptic number.

It is an amenable number.

87200521 is a deficient number, since it is larger than the sum of its proper divisors (4677239).

87200521 is a wasteful number, since it uses less digits than its factorization.

87200521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36935.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 87200521 is about 9338.1219203863. The cubic root of 87200521 is about 443.4449293504. Note that the first 3 decimals are identical.

Adding to 87200521 its reverse (12500278), we get a palindrome (99700799).

The spelling of 87200521 in words is "eighty-seven million, two hundred thousand, five hundred twenty-one".