99452257 has 4 divisors (see below), whose sum is σ = 100477636. Its totient is φ = 98426880.

The previous prime is 99452239. The next prime is 99452267. The reversal of 99452257 is 75225499.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69956496 + 29495761 = 8364^2 + 5431^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99452257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99452267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512544 + ... + 512737.

It is an arithmetic number, because the mean of its divisors is an integer number (25119409).

Almost surely, 2^99452257 is an apocalyptic number.

99452257 is a gapful number since it is divisible by the number (97) formed by its first and last digit.

It is an amenable number.

99452257 is a deficient number, since it is larger than the sum of its proper divisors (1025379).

99452257 is a wasteful number, since it uses less digits than its factorization.

99452257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025378.

The product of its digits is 226800, while the sum is 43.

The square root of 99452257 is about 9972.5752441383. The cubic root of 99452257 is about 463.3098653929.

The spelling of 99452257 in words is "ninety-nine million, four hundred fifty-two thousand, two hundred fifty-seven".