91054697 has 2 divisors, whose sum is σ = 91054698. Its totient is φ = 91054696.

The previous prime is 91054687. The next prime is 91054699. The reversal of 91054697 is 79645019.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90421081 + 633616 = 9509^2 + 796^2 .

It is an emirp because it is prime and its reverse (79645019) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91054697 - 2⁴ = 91054681 is a prime.

Together with 91054699, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91054699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45527348 + 45527349.

It is an arithmetic number, because the mean of its divisors is an integer number (45527349).

Almost surely, 2^91054697 is an apocalyptic number.

It is an amenable number.

91054697 is a deficient number, since it is larger than the sum of its proper divisors (1).

91054697 is an equidigital number, since it uses as much as digits as its factorization.

91054697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 91054697 is about 9542.2584852853. The cubic root of 91054697 is about 449.8842451237.

The spelling of 91054697 in words is "ninety-one million, fifty-four thousand, six hundred ninety-seven".