87175279 has 2 divisors, whose sum is σ = 87175280. Its totient is φ = 87175278.

The previous prime is 87175229. The next prime is 87175321. The reversal of 87175279 is 97257178.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87175279 - 2⁹ = 87174767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87175229) by changing a digit.

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, 43587639 + 43587640.

It is an arithmetic number, because the mean of its divisors is an integer number (43587640).

Almost surely, 2^87175279 is an apocalyptic number.

87175279 is a deficient number, since it is larger than the sum of its proper divisors (1).

87175279 is an equidigital number, since it uses as much as digits as its factorization.

87175279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246960, while the sum is 46.

The square root of 87175279 is about 9336.7702659967. The cubic root of 87175279 is about 443.4021371094.

It can be divided in two parts, 87175 and 279, that multiplied together give a triangular number (24321825 = T₆₉₇₄).

The spelling of 87175279 in words is "eighty-seven million, one hundred seventy-five thousand, two hundred seventy-nine".