97505539 has 2 divisors, whose sum is σ = 97505540. Its totient is φ = 97505538.

The previous prime is 97505537. The next prime is 97505563. The reversal of 97505539 is 93550579.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97505539 - 2¹ = 97505537 is a prime.

Together with 97505537, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 97505495 and 97505504.

It is not a weakly prime, because it can be changed into another prime (97505537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48752769 + 48752770.

It is an arithmetic number, because the mean of its divisors is an integer number (48752770).

Almost surely, 2^97505539 is an apocalyptic number.

97505539 is a deficient number, since it is larger than the sum of its proper divisors (1).

97505539 is an equidigital number, since it uses as much as digits as its factorization.

97505539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 212625, while the sum is 43.

The square root of 97505539 is about 9874.4893032501. The cubic root of 97505539 is about 460.2669197563.

The spelling of 97505539 in words is "ninety-seven million, five hundred five thousand, five hundred thirty-nine".