16281245 has 4 divisors (see below), whose sum is σ = 19537500. Its totient is φ = 13024992.

The previous prime is 16281191. The next prime is 16281247. The reversal of 16281245 is 54218261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54218261 = 7207 ⋅7523.

It can be written as a sum of positive squares in 2 ways, for example, as 4897369 + 11383876 = 2213^2 + 3374^2 .

It is a cyclic number.

It is not a de Polignac number, because 16281245 - 2⁸ = 16280989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16281247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1628120 + ... + 1628129.

It is an arithmetic number, because the mean of its divisors is an integer number (4884375).

Almost surely, 2^16281245 is an apocalyptic number.

It is an amenable number.

16281245 is a deficient number, since it is larger than the sum of its proper divisors (3256255).

16281245 is an equidigital number, since it uses as much as digits as its factorization.

16281245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3256254.

The product of its digits is 3840, while the sum is 29.

The square root of 16281245 is about 4035.0024783140. The cubic root of 16281245 is about 253.4520863297.

The spelling of 16281245 in words is "sixteen million, two hundred eighty-one thousand, two hundred forty-five".