99995261 has 2 divisors, whose sum is σ = 99995262. Its totient is φ = 99995260.

The previous prime is 99995257. The next prime is 99995267. The reversal of 99995261 is 16259999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87703225 + 12292036 = 9365^2 + 3506^2 .

It is a cyclic number.

It is not a de Polignac number, because 99995261 - 2² = 99995257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99995267) 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, 49997630 + 49997631.

It is an arithmetic number, because the mean of its divisors is an integer number (49997631).

Almost surely, 2^99995261 is an apocalyptic number.

It is an amenable number.

99995261 is a deficient number, since it is larger than the sum of its proper divisors (1).

99995261 is an equidigital number, since it uses as much as digits as its factorization.

99995261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 393660, while the sum is 50.

The square root of 99995261 is about 9999.7630471927. The cubic root of 99995261 is about 464.1515510823.

The spelling of 99995261 in words is "ninety-nine million, nine hundred ninety-five thousand, two hundred sixty-one".