97994591 has 2 divisors, whose sum is σ = 97994592. Its totient is φ = 97994590.

The previous prime is 97994573. The next prime is 97994599. The reversal of 97994591 is 19549979.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97994591 - 2¹⁴ = 97978207 is a prime.

It is a Chen prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97994599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48997295 + 48997296.

It is an arithmetic number, because the mean of its divisors is an integer number (48997296).

Almost surely, 2^97994591 is an apocalyptic number.

97994591 is a deficient number, since it is larger than the sum of its proper divisors (1).

97994591 is an equidigital number, since it uses as much as digits as its factorization.

97994591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 53.

The square root of 97994591 is about 9899.2217370862. The cubic root of 97994591 is about 461.0351467879.

The spelling of 97994591 in words is "ninety-seven million, nine hundred ninety-four thousand, five hundred ninety-one".