87262291 has 2 divisors, whose sum is σ = 87262292. Its totient is φ = 87262290.

The previous prime is 87262277. The next prime is 87262313. The reversal of 87262291 is 19226278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87262291 - 2⁷ = 87262163 is a prime.

It is a super-2 number, since 2×87262291² = 15229414861137362, which contains 22 as substring.

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 87262291.

It is not a weakly prime, because it can be changed into another prime (87262211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43631145 + 43631146.

It is an arithmetic number, because the mean of its divisors is an integer number (43631146).

Almost surely, 2^87262291 is an apocalyptic number.

87262291 is a deficient number, since it is larger than the sum of its proper divisors (1).

87262291 is an equidigital number, since it uses as much as digits as its factorization.

87262291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 87262291 is about 9341.4287451117. The cubic root of 87262291 is about 443.5496119362.

The spelling of 87262291 in words is "eighty-seven million, two hundred sixty-two thousand, two hundred ninety-one".