87417497 has 2 divisors, whose sum is σ = 87417498. Its totient is φ = 87417496.

The previous prime is 87417493. The next prime is 87417559. The reversal of 87417497 is 79471478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87254281 + 163216 = 9341^2 + 404^2 .

It is a cyclic number.

It is not a de Polignac number, because 87417497 - 2² = 87417493 is a prime.

It is not a weakly prime, because it can be changed into another prime (87417493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43708748 + 43708749.

It is an arithmetic number, because the mean of its divisors is an integer number (43708749).

Almost surely, 2^87417497 is an apocalyptic number.

It is an amenable number.

87417497 is a deficient number, since it is larger than the sum of its proper divisors (1).

87417497 is an equidigital number, since it uses as much as digits as its factorization.

87417497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 395136, while the sum is 47.

The square root of 87417497 is about 9349.7324560653. The cubic root of 87417497 is about 443.8124241481.

The spelling of 87417497 in words is "eighty-seven million, four hundred seventeen thousand, four hundred ninety-seven".