91377653 has 2 divisors, whose sum is σ = 91377654. Its totient is φ = 91377652.

The previous prime is 91377613. The next prime is 91377659. The reversal of 91377653 is 35677319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51523684 + 39853969 = 7178^2 + 6313^2 .

It is an emirp because it is prime and its reverse (35677319) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91377653 - 2¹⁴ = 91361269 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91377653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91377659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45688826 + 45688827.

It is an arithmetic number, because the mean of its divisors is an integer number (45688827).

Almost surely, 2^91377653 is an apocalyptic number.

It is an amenable number.

91377653 is a deficient number, since it is larger than the sum of its proper divisors (1).

91377653 is an equidigital number, since it uses as much as digits as its factorization.

91377653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119070, while the sum is 41.

The square root of 91377653 is about 9559.1659154970. The cubic root of 91377653 is about 450.4155059379.

The spelling of 91377653 in words is "ninety-one million, three hundred seventy-seven thousand, six hundred fifty-three".