91056653 has 2 divisors, whose sum is σ = 91056654. Its totient is φ = 91056652.

The previous prime is 91056631. The next prime is 91056673. The reversal of 91056653 is 35665019.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91049764 + 6889 = 9542^2 + 83^2 .

It is a cyclic number.

It is not a de Polignac number, because 91056653 - 2²⁰ = 90008077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91056673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45528326 + 45528327.

It is an arithmetic number, because the mean of its divisors is an integer number (45528327).

Almost surely, 2^91056653 is an apocalyptic number.

It is an amenable number.

91056653 is a deficient number, since it is larger than the sum of its proper divisors (1).

91056653 is an equidigital number, since it uses as much as digits as its factorization.

91056653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 91056653 is about 9542.3609761945. The cubic root of 91056653 is about 449.8874665108.

The spelling of 91056653 in words is "ninety-one million, fifty-six thousand, six hundred fifty-three".