16165253 has 4 divisors (see below), whose sum is σ = 17408748. Its totient is φ = 14921760.

The previous prime is 16165231. The next prime is 16165273. The reversal of 16165253 is 35256161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35256161 = 131 ⋅269131.

It can be written as a sum of positive squares in 2 ways, for example, as 10975969 + 5189284 = 3313^2 + 2278^2 .

It is a cyclic number.

It is not a de Polignac number, because 16165253 - 2¹⁶ = 16099717 is a prime.

It is a super-2 number, since 2×16165253² = 522630809108018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16165273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621728 + ... + 621753.

It is an arithmetic number, because the mean of its divisors is an integer number (4352187).

Almost surely, 2^16165253 is an apocalyptic number.

16165253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16165253 is a deficient number, since it is larger than the sum of its proper divisors (1243495).

16165253 is a wasteful number, since it uses less digits than its factorization.

16165253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243494.

The product of its digits is 5400, while the sum is 29.

The square root of 16165253 is about 4020.6035616559. The cubic root of 16165253 is about 252.8487642020.

It can be divided in two parts, 1616 and 5253, that multiplied together give a palindrome (8488848).

The spelling of 16165253 in words is "sixteen million, one hundred sixty-five thousand, two hundred fifty-three".