99975451 has 2 divisors, whose sum is σ = 99975452. Its totient is φ = 99975450.

The previous prime is 99975427. The next prime is 99975461. The reversal of 99975451 is 15457999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99975451 - 2¹¹ = 99973403 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99975395 and 99975404.

It is not a weakly prime, because it can be changed into another prime (99975461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49987725 + 49987726.

It is an arithmetic number, because the mean of its divisors is an integer number (49987726).

Almost surely, 2^99975451 is an apocalyptic number.

99975451 is a deficient number, since it is larger than the sum of its proper divisors (1).

99975451 is an equidigital number, since it uses as much as digits as its factorization.

99975451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 510300, while the sum is 49.

The square root of 99975451 is about 9998.7724746591. The cubic root of 99975451 is about 464.1208981314.

The spelling of 99975451 in words is "ninety-nine million, nine hundred seventy-five thousand, four hundred fifty-one".