97539539 has 2 divisors, whose sum is σ = 97539540. Its totient is φ = 97539538.

The previous prime is 97539509. The next prime is 97539569. The reversal of 97539539 is 93593579.

It is a balanced prime because it is at equal distance from previous prime (97539509) and next prime (97539569).

It is a cyclic number.

It is not a de Polignac number, because 97539539 - 2²⁴ = 80762323 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97539509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48769769 + 48769770.

It is an arithmetic number, because the mean of its divisors is an integer number (48769770).

Almost surely, 2^97539539 is an apocalyptic number.

97539539 is a deficient number, since it is larger than the sum of its proper divisors (1).

97539539 is an equidigital number, since it uses as much as digits as its factorization.

97539539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1148175, while the sum is 50.

The square root of 97539539 is about 9876.2107612181. The cubic root of 97539539 is about 460.3204116121.

The spelling of 97539539 in words is "ninety-seven million, five hundred thirty-nine thousand, five hundred thirty-nine".