97207091 has 2 divisors, whose sum is σ = 97207092. Its totient is φ = 97207090.

The previous prime is 97207081. The next prime is 97207129. The reversal of 97207091 is 19070279.

It is a weak prime.

It is an emirp because it is prime and its reverse (19070279) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97207091 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97207001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48603545 + 48603546.

It is an arithmetic number, because the mean of its divisors is an integer number (48603546).

Almost surely, 2^97207091 is an apocalyptic number.

97207091 is a deficient number, since it is larger than the sum of its proper divisors (1).

97207091 is an equidigital number, since it uses as much as digits as its factorization.

97207091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 97207091 is about 9859.3656489655. The cubic root of 97207091 is about 459.7968400288.

The spelling of 97207091 in words is "ninety-seven million, two hundred seven thousand, ninety-one".