99650251 has 2 divisors, whose sum is σ = 99650252. Its totient is φ = 99650250.

The previous prime is 99650227. The next prime is 99650261. The reversal of 99650251 is 15205699.

It is a strong prime.

It is an emirp because it is prime and its reverse (15205699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99650251 - 2⁵ = 99650219 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 99650251.

It is not a weakly prime, because it can be changed into another prime (99650261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49825125 + 49825126.

It is an arithmetic number, because the mean of its divisors is an integer number (49825126).

Almost surely, 2^99650251 is an apocalyptic number.

99650251 is a deficient number, since it is larger than the sum of its proper divisors (1).

99650251 is an equidigital number, since it uses as much as digits as its factorization.

99650251 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 37.

The square root of 99650251 is about 9982.4972326568. The cubic root of 99650251 is about 463.6171209156.

The spelling of 99650251 in words is "ninety-nine million, six hundred fifty thousand, two hundred fifty-one".