97572439 has 2 divisors, whose sum is σ = 97572440. Its totient is φ = 97572438.

The previous prime is 97572437. The next prime is 97572451. The reversal of 97572439 is 93427579.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97572439 - 2¹ = 97572437 is a prime.

Together with 97572437, it forms a pair of twin primes.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97572437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48786219 + 48786220.

It is an arithmetic number, because the mean of its divisors is an integer number (48786220).

Almost surely, 2^97572439 is an apocalyptic number.

97572439 is a deficient number, since it is larger than the sum of its proper divisors (1).

97572439 is an equidigital number, since it uses as much as digits as its factorization.

97572439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 46.

The square root of 97572439 is about 9877.8762393543. The cubic root of 97572439 is about 460.3721610164.

The spelling of 97572439 in words is "ninety-seven million, five hundred seventy-two thousand, four hundred thirty-nine".