99251807 has 2 divisors, whose sum is σ = 99251808. Its totient is φ = 99251806.

The previous prime is 99251773. The next prime is 99251843. The reversal of 99251807 is 70815299.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99251807 - 2⁶ = 99251743 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99251107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49625903 + 49625904.

It is an arithmetic number, because the mean of its divisors is an integer number (49625904).

Almost surely, 2^99251807 is an apocalyptic number.

99251807 is a deficient number, since it is larger than the sum of its proper divisors (1).

99251807 is an equidigital number, since it uses as much as digits as its factorization.

99251807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 99251807 is about 9962.5201129032. The cubic root of 99251807 is about 462.9983828451.

The spelling of 99251807 in words is "ninety-nine million, two hundred fifty-one thousand, eight hundred seven".