16253397 has 12 divisors (see below), whose sum is σ = 24112140. Its totient is φ = 10542528.

The previous prime is 16253383. The next prime is 16253401. The reversal of 16253397 is 79335261.

16253397 is a `hidden beast` number, since 16 + 253 + 397 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10536516 + 5716881 = 3246^2 + 2391^2 .

It is not a de Polignac number, because 16253397 - 2¹⁵ = 16220629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16253327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24072 + ... + 24737.

It is an arithmetic number, because the mean of its divisors is an integer number (2009345).

Almost surely, 2^16253397 is an apocalyptic number.

It is an amenable number.

16253397 is a deficient number, since it is larger than the sum of its proper divisors (7858743).

16253397 is a wasteful number, since it uses less digits than its factorization.

16253397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48852 (or 48849 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 16253397 is about 4031.5501981248. The cubic root of 16253397 is about 253.3074994817.

The spelling of 16253397 in words is "sixteen million, two hundred fifty-three thousand, three hundred ninety-seven".