99994571 has 2 divisors, whose sum is σ = 99994572. Its totient is φ = 99994570.

The previous prime is 99994567. The next prime is 99994579. The reversal of 99994571 is 17549999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99994571 - 2² = 99994567 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (99994579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49997285 + 49997286.

It is an arithmetic number, because the mean of its divisors is an integer number (49997286).

Almost surely, 2^99994571 is an apocalyptic number.

99994571 is a deficient number, since it is larger than the sum of its proper divisors (1).

99994571 is an equidigital number, since it uses as much as digits as its factorization.

99994571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 53.

The square root of 99994571 is about 9999.7285463156. The cubic root of 99994571 is about 464.1504834807.

The spelling of 99994571 in words is "ninety-nine million, nine hundred ninety-four thousand, five hundred seventy-one".