16145247 has 4 divisors (see below), whose sum is σ = 21527000. Its totient is φ = 10763496.

The previous prime is 16145221. The next prime is 16145251. The reversal of 16145247 is 74254161.

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

It is not a de Polignac number, because 16145247 - 2⁶ = 16145183 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 (16145047) 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, 2690872 + ... + 2690877.

It is an arithmetic number, because the mean of its divisors is an integer number (5381750).

Almost surely, 2^16145247 is an apocalyptic number.

16145247 is a deficient number, since it is larger than the sum of its proper divisors (5381753).

16145247 is an equidigital number, since it uses as much as digits as its factorization.

16145247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5381752.

The product of its digits is 6720, while the sum is 30.

The square root of 16145247 is about 4018.1148564968. The cubic root of 16145247 is about 252.7444132092.

The spelling of 16145247 in words is "sixteen million, one hundred forty-five thousand, two hundred forty-seven".