91725299 has 2 divisors, whose sum is σ = 91725300. Its totient is φ = 91725298.

The previous prime is 91725259. The next prime is 91725307. The reversal of 91725299 is 99252719.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (99252719) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91725299 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91725259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45862649 + 45862650.

It is an arithmetic number, because the mean of its divisors is an integer number (45862650).

Almost surely, 2^91725299 is an apocalyptic number.

91725299 is a deficient number, since it is larger than the sum of its proper divisors (1).

91725299 is an equidigital number, since it uses as much as digits as its factorization.

91725299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 44.

The square root of 91725299 is about 9577.3325618358. The cubic root of 91725299 is about 450.9859845563.

The spelling of 91725299 in words is "ninety-one million, seven hundred twenty-five thousand, two hundred ninety-nine".