87902497 has 2 divisors, whose sum is σ = 87902498. Its totient is φ = 87902496.

The previous prime is 87902489. The next prime is 87902501. The reversal of 87902497 is 79420978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62742241 + 25160256 = 7921^2 + 5016^2 .

It is a cyclic number.

It is not a de Polignac number, because 87902497 - 2³ = 87902489 is a prime.

It is not a weakly prime, because it can be changed into another prime (87902447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43951248 + 43951249.

It is an arithmetic number, because the mean of its divisors is an integer number (43951249).

Almost surely, 2^87902497 is an apocalyptic number.

It is an amenable number.

87902497 is a deficient number, since it is larger than the sum of its proper divisors (1).

87902497 is an equidigital number, since it uses as much as digits as its factorization.

87902497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 87902497 is about 9375.6331519530. The cubic root of 87902497 is about 444.6316810932.

The spelling of 87902497 in words is "eighty-seven million, nine hundred two thousand, four hundred ninety-seven".