97275391 has 2 divisors, whose sum is σ = 97275392. Its totient is φ = 97275390.

The previous prime is 97275371. The next prime is 97275413. The reversal of 97275391 is 19357279.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97275391 - 2⁵ = 97275359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97275341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48637695 + 48637696.

It is an arithmetic number, because the mean of its divisors is an integer number (48637696).

Almost surely, 2^97275391 is an apocalyptic number.

97275391 is a deficient number, since it is larger than the sum of its proper divisors (1).

97275391 is an equidigital number, since it uses as much as digits as its factorization.

97275391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119070, while the sum is 43.

The square root of 97275391 is about 9862.8287524422. The cubic root of 97275391 is about 459.9045028602.

The spelling of 97275391 in words is "ninety-seven million, two hundred seventy-five thousand, three hundred ninety-one".