97515499 has 2 divisors, whose sum is σ = 97515500. Its totient is φ = 97515498.

The previous prime is 97515437. The next prime is 97515511. The reversal of 97515499 is 99451579.

It is a strong prime.

It is an emirp because it is prime and its reverse (99451579) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97515499 - 2¹⁹ = 96991211 is a prime.

It is not a weakly prime, because it can be changed into another prime (97315499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48757749 + 48757750.

It is an arithmetic number, because the mean of its divisors is an integer number (48757750).

Almost surely, 2^97515499 is an apocalyptic number.

97515499 is a deficient number, since it is larger than the sum of its proper divisors (1).

97515499 is an equidigital number, since it uses as much as digits as its factorization.

97515499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 510300, while the sum is 49.

The square root of 97515499 is about 9874.9936202511. The cubic root of 97515499 is about 460.2825910111.

The spelling of 97515499 in words is "ninety-seven million, five hundred fifteen thousand, four hundred ninety-nine".