99912523 has 2 divisors, whose sum is σ = 99912524. Its totient is φ = 99912522.

The previous prime is 99912503. The next prime is 99912541. The reversal of 99912523 is 32521999.

It is a strong prime.

It is an emirp because it is prime and its reverse (32521999) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99912523 is a prime.

It is equal to p_5756692 and since 99912523 and 5756692 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (99912503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49956261 + 49956262.

It is an arithmetic number, because the mean of its divisors is an integer number (49956262).

Almost surely, 2^99912523 is an apocalyptic number.

99912523 is a deficient number, since it is larger than the sum of its proper divisors (1).

99912523 is an equidigital number, since it uses as much as digits as its factorization.

99912523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 40.

The square root of 99912523 is about 9995.6251930532. The cubic root of 99912523 is about 464.0234997883.

The spelling of 99912523 in words is "ninety-nine million, nine hundred twelve thousand, five hundred twenty-three".