97011791 has 2 divisors, whose sum is σ = 97011792. Its totient is φ = 97011790.

The previous prime is 97011787. The next prime is 97011799. The reversal of 97011791 is 19711079.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97011791 - 2² = 97011787 is a prime.

It is a super-3 number, since 3×97011791³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97011799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48505895 + 48505896.

It is an arithmetic number, because the mean of its divisors is an integer number (48505896).

Almost surely, 2^97011791 is an apocalyptic number.

97011791 is a deficient number, since it is larger than the sum of its proper divisors (1).

97011791 is an equidigital number, since it uses as much as digits as its factorization.

97011791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3969, while the sum is 35.

The square root of 97011791 is about 9849.4563809380. The cubic root of 97011791 is about 459.4887056892.

The spelling of 97011791 in words is "ninety-seven million, eleven thousand, seven hundred ninety-one".