87615259 has 2 divisors, whose sum is σ = 87615260. Its totient is φ = 87615258.

The previous prime is 87615239. The next prime is 87615277. The reversal of 87615259 is 95251678.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87615259 is a prime.

It is not a weakly prime, because it can be changed into another prime (87615239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43807629 + 43807630.

It is an arithmetic number, because the mean of its divisors is an integer number (43807630).

Almost surely, 2^87615259 is an apocalyptic number.

87615259 is a deficient number, since it is larger than the sum of its proper divisors (1).

87615259 is an equidigital number, since it uses as much as digits as its factorization.

87615259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 43.

The square root of 87615259 is about 9360.3022921271. The cubic root of 87615259 is about 444.1468466332.

The spelling of 87615259 in words is "eighty-seven million, six hundred fifteen thousand, two hundred fifty-nine".