9091005457 has 2 divisors, whose sum is σ = 9091005458. Its totient is φ = 9091005456.

The previous prime is 9091005431. The next prime is 9091005479. The reversal of 9091005457 is 7545001909.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6196995841 + 2894009616 = 78721^2 + 53796^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9091005457 is a prime.

It is not a weakly prime, because it can be changed into another prime (9091005257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4545502728 + 4545502729.

It is an arithmetic number, because the mean of its divisors is an integer number (4545502729).

Almost surely, 2^9091005457 is an apocalyptic number.

It is an amenable number.

9091005457 is a deficient number, since it is larger than the sum of its proper divisors (1).

9091005457 is an equidigital number, since it uses as much as digits as its factorization.

9091005457 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 9091005457 is about 95346.7642712641. The cubic root of 9091005457 is about 2087.0713968779.

The spelling of 9091005457 in words is "nine billion, ninety-one million, five thousand, four hundred fifty-seven".