91054597 has 2 divisors, whose sum is σ = 91054598. Its totient is φ = 91054596.

The previous prime is 91054573. The next prime is 91054627. The reversal of 91054597 is 79545019.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90364036 + 690561 = 9506^2 + 831^2 .

It is an emirp because it is prime and its reverse (79545019) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91054597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91054097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45527298 + 45527299.

It is an arithmetic number, because the mean of its divisors is an integer number (45527299).

Almost surely, 2^91054597 is an apocalyptic number.

It is an amenable number.

91054597 is a deficient number, since it is larger than the sum of its proper divisors (1).

91054597 is an equidigital number, since it uses as much as digits as its factorization.

91054597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 91054597 is about 9542.2532454342. The cubic root of 91054597 is about 449.8840804299.

The spelling of 91054597 in words is "ninety-one million, fifty-four thousand, five hundred ninety-seven".