99922451 has 2 divisors, whose sum is σ = 99922452. Its totient is φ = 99922450.

The previous prime is 99922441. The next prime is 99922483. The reversal of 99922451 is 15422999.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99922451 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 99922399 and 99922408.

It is not a weakly prime, because it can be changed into another prime (99922441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49961225 + 49961226.

It is an arithmetic number, because the mean of its divisors is an integer number (49961226).

Almost surely, 2^99922451 is an apocalyptic number.

99922451 is a deficient number, since it is larger than the sum of its proper divisors (1).

99922451 is an equidigital number, since it uses as much as digits as its factorization.

99922451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 41.

The square root of 99922451 is about 9996.1217979775. The cubic root of 99922451 is about 464.0388688084.

The spelling of 99922451 in words is "ninety-nine million, nine hundred twenty-two thousand, four hundred fifty-one".