87225233 has 2 divisors, whose sum is σ = 87225234. Its totient is φ = 87225232.

The previous prime is 87225217. The next prime is 87225239. The reversal of 87225233 is 33252278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85895824 + 1329409 = 9268^2 + 1153^2 .

It is a cyclic number.

It is not a de Polignac number, because 87225233 - 2⁴ = 87225217 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87225233.

It is not a weakly prime, because it can be changed into another prime (87225239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43612616 + 43612617.

It is an arithmetic number, because the mean of its divisors is an integer number (43612617).

Almost surely, 2^87225233 is an apocalyptic number.

It is an amenable number.

87225233 is a deficient number, since it is larger than the sum of its proper divisors (1).

87225233 is an equidigital number, since it uses as much as digits as its factorization.

87225233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 32.

The square root of 87225233 is about 9339.4450049240. The cubic root of 87225233 is about 443.4868150943.

The spelling of 87225233 in words is "eighty-seven million, two hundred twenty-five thousand, two hundred thirty-three".