99111451 has 2 divisors, whose sum is σ = 99111452. Its totient is φ = 99111450.

The previous prime is 99111427. The next prime is 99111461. The reversal of 99111451 is 15411199.

It is a strong prime.

It is an emirp because it is prime and its reverse (15411199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99111451 - 2¹⁷ = 98980379 is a prime.

It is not a weakly prime, because it can be changed into another prime (99111461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49555725 + 49555726.

It is an arithmetic number, because the mean of its divisors is an integer number (49555726).

Almost surely, 2^99111451 is an apocalyptic number.

99111451 is a deficient number, since it is larger than the sum of its proper divisors (1).

99111451 is an equidigital number, since it uses as much as digits as its factorization.

99111451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 31.

The square root of 99111451 is about 9955.4734191800. The cubic root of 99111451 is about 462.7800316314.

The spelling of 99111451 in words is "ninety-nine million, one hundred eleven thousand, four hundred fifty-one".