16121253 has 32 divisors (see below), whose sum is σ = 24330240. Its totient is φ = 9434880.

The previous prime is 16121249. The next prime is 16121257. The reversal of 16121253 is 35212161.

It is an interprime number because it is at equal distance from previous prime (16121249) and next prime (16121257).

It is not a de Polignac number, because 16121253 - 2² = 16121249 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16121257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122998 + ... + 123128.

It is an arithmetic number, because the mean of its divisors is an integer number (760320).

Almost surely, 2^16121253 is an apocalyptic number.

It is an amenable number.

16121253 is a deficient number, since it is larger than the sum of its proper divisors (8208987).

16121253 is a wasteful number, since it uses less digits than its factorization.

16121253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297.

The product of its digits is 360, while the sum is 21.

The square root of 16121253 is about 4015.1280178844. The cubic root of 16121253 is about 252.6191471153.

The spelling of 16121253 in words is "sixteen million, one hundred twenty-one thousand, two hundred fifty-three".