97542499 has 2 divisors, whose sum is σ = 97542500. Its totient is φ = 97542498.

The previous prime is 97542491. The next prime is 97542541. The reversal of 97542499 is 99424579.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97542499 - 2³ = 97542491 is a prime.

It is a super-2 number, since 2×97542499² = 19029078222330002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97542491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48771249 + 48771250.

It is an arithmetic number, because the mean of its divisors is an integer number (48771250).

Almost surely, 2^97542499 is an apocalyptic number.

97542499 is a deficient number, since it is larger than the sum of its proper divisors (1).

97542499 is an equidigital number, since it uses as much as digits as its factorization.

97542499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 49.

The square root of 97542499 is about 9876.3606151254. The cubic root of 97542499 is about 460.3250679618.

The spelling of 97542499 in words is "ninety-seven million, five hundred forty-two thousand, four hundred ninety-nine".