16365253 has 4 divisors (see below), whose sum is σ = 16374988. Its totient is φ = 16355520.

The previous prime is 16365233. The next prime is 16365269. The reversal of 16365253 is 35256361.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 35256361 = 7 ⋅5036623.

It can be written as a sum of positive squares in 2 ways, for example, as 14424804 + 1940449 = 3798^2 + 1393^2 .

It is a cyclic number.

It is not a de Polignac number, because 16365253 - 2⁹ = 16364741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16365233) 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, 1626 + ... + 5947.

It is an arithmetic number, because the mean of its divisors is an integer number (4093747).

Almost surely, 2^16365253 is an apocalyptic number.

It is an amenable number.

16365253 is a deficient number, since it is larger than the sum of its proper divisors (9735).

16365253 is an equidigital number, since it uses as much as digits as its factorization.

16365253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9734.

The product of its digits is 16200, while the sum is 31.

The square root of 16365253 is about 4045.3989914469. The cubic root of 16365253 is about 253.8872595744.

It can be divided in two parts, 1636 and 5253, that added together give a square (6889 = 83²).

The spelling of 16365253 in words is "sixteen million, three hundred sixty-five thousand, two hundred fifty-three".