99574549 has 2 divisors, whose sum is σ = 99574550. Its totient is φ = 99574548.

The previous prime is 99574543. The next prime is 99574561. The reversal of 99574549 is 94547599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76003524 + 23571025 = 8718^2 + 4855^2 .

It is a cyclic number.

It is not a de Polignac number, because 99574549 - 2⁹ = 99574037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99574496 and 99574505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99574543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49787274 + 49787275.

It is an arithmetic number, because the mean of its divisors is an integer number (49787275).

Almost surely, 2^99574549 is an apocalyptic number.

It is an amenable number.

99574549 is a deficient number, since it is larger than the sum of its proper divisors (1).

99574549 is an equidigital number, since it uses as much as digits as its factorization.

99574549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2041200, while the sum is 52.

The square root of 99574549 is about 9978.7047756710. The cubic root of 99574549 is about 463.4996914257.

The spelling of 99574549 in words is "ninety-nine million, five hundred seventy-four thousand, five hundred forty-nine".