99505597 has 2 divisors, whose sum is σ = 99505598. Its totient is φ = 99505596.

The previous prime is 99505591. The next prime is 99505619. The reversal of 99505597 is 79550599.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57592921 + 41912676 = 7589^2 + 6474^2 .

It is a cyclic number.

It is not a de Polignac number, because 99505597 - 2¹¹ = 99503549 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 99505597.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99505591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49752798 + 49752799.

It is an arithmetic number, because the mean of its divisors is an integer number (49752799).

Almost surely, 2^99505597 is an apocalyptic number.

It is an amenable number.

99505597 is a deficient number, since it is larger than the sum of its proper divisors (1).

99505597 is an equidigital number, since it uses as much as digits as its factorization.

99505597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 637875, while the sum is 49.

The square root of 99505597 is about 9975.2492199443. The cubic root of 99505597 is about 463.3926807796.

The spelling of 99505597 in words is "ninety-nine million, five hundred five thousand, five hundred ninety-seven".