16152991 has 4 divisors (see below), whose sum is σ = 16204912. Its totient is φ = 16101072.

The previous prime is 16152989. The next prime is 16153069. The reversal of 16152991 is 19925161.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16152991 - 2¹ = 16152989 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 (16152901) 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 3 ways as a sum of consecutive naturals, for example, 25491 + ... + 26116.

It is an arithmetic number, because the mean of its divisors is an integer number (4051228).

Almost surely, 2^16152991 is an apocalyptic number.

16152991 is a deficient number, since it is larger than the sum of its proper divisors (51921).

16152991 is an equidigital number, since it uses as much as digits as its factorization.

16152991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51920.

The product of its digits is 4860, while the sum is 34.

The square root of 16152991 is about 4019.0783769417. The cubic root of 16152991 is about 252.7848160161.

The spelling of 16152991 in words is "sixteen million, one hundred fifty-two thousand, nine hundred ninety-one".