97567091 has 2 divisors, whose sum is σ = 97567092. Its totient is φ = 97567090.

The previous prime is 97567087. The next prime is 97567103. The reversal of 97567091 is 19076579.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97567091 - 2² = 97567087 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97567021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48783545 + 48783546.

It is an arithmetic number, because the mean of its divisors is an integer number (48783546).

Almost surely, 2^97567091 is an apocalyptic number.

97567091 is a deficient number, since it is larger than the sum of its proper divisors (1).

97567091 is an equidigital number, since it uses as much as digits as its factorization.

97567091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 119070, while the sum is 44.

The square root of 97567091 is about 9877.6055296818. The cubic root of 97567091 is about 460.3637497774.

The spelling of 97567091 in words is "ninety-seven million, five hundred sixty-seven thousand, ninety-one".