16351145 has 4 divisors (see below), whose sum is σ = 19621380. Its totient is φ = 13080912.

The previous prime is 16351141. The next prime is 16351187. The reversal of 16351145 is 54115361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54115361 = 113 ⋅478897.

It can be written as a sum of positive squares in 2 ways, for example, as 1819801 + 14531344 = 1349^2 + 3812^2 .

It is a cyclic number.

It is not a de Polignac number, because 16351145 - 2² = 16351141 is a prime.

It is a super-2 number, since 2×16351145² = 534719885622050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16351141) 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, 1635110 + ... + 1635119.

It is an arithmetic number, because the mean of its divisors is an integer number (4905345).

Almost surely, 2^16351145 is an apocalyptic number.

It is an amenable number.

16351145 is a deficient number, since it is larger than the sum of its proper divisors (3270235).

16351145 is an equidigital number, since it uses as much as digits as its factorization.

16351145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3270234.

The product of its digits is 1800, while the sum is 26.

The square root of 16351145 is about 4043.6549061462. The cubic root of 16351145 is about 253.8142823704.

The spelling of 16351145 in words is "sixteen million, three hundred fifty-one thousand, one hundred forty-five".