87225224 has 8 divisors (see below), whose sum is σ = 163547310. Its totient is φ = 43612608.

The previous prime is 87225217. The next prime is 87225233. The reversal of 87225224 is 42252278.

It can be written as a sum of positive squares in only one way, i.e., 72556324 + 14668900 = 8518^2 + 3830^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5451569 + ... + 5451584.

Almost surely, 2^87225224 is an apocalyptic number.

It is an amenable number.

87225224 is a deficient number, since it is larger than the sum of its proper divisors (76322086).

87225224 is a wasteful number, since it uses less digits than its factorization.

87225224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10903159 (or 10903155 counting only the distinct ones).

The product of its digits is 17920, while the sum is 32.

The square root of 87225224 is about 9339.4445230966. Note that the first 3 decimals coincide. The cubic root of 87225224 is about 443.4867998412.

The spelling of 87225224 in words is "eighty-seven million, two hundred twenty-five thousand, two hundred twenty-four".