16253257 has 4 divisors (see below), whose sum is σ = 16343236. Its totient is φ = 16163280.

The previous prime is 16253243. The next prime is 16253273. The reversal of 16253257 is 75235261.

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 1229881 + 15023376 = 1109^2 + 3876^2 .

It is a cyclic number.

It is not a de Polignac number, because 16253257 - 2¹⁵ = 16220489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16253057) 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, 44718 + ... + 45079.

It is an arithmetic number, because the mean of its divisors is an integer number (4085809).

Almost surely, 2^16253257 is an apocalyptic number.

It is an amenable number.

16253257 is a deficient number, since it is larger than the sum of its proper divisors (89979).

16253257 is an equidigital number, since it uses as much as digits as its factorization.

16253257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89978.

The product of its digits is 12600, while the sum is 31.

The square root of 16253257 is about 4031.5328350393. The cubic root of 16253257 is about 253.3067721845.

The spelling of 16253257 in words is "sixteen million, two hundred fifty-three thousand, two hundred fifty-seven".