27245143 has 4 divisors (see below), whose sum is σ = 27313488. Its totient is φ = 27176800.

The previous prime is 27245137. The next prime is 27245159. The reversal of 27245143 is 34154272.

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 27245143 - 2⁵ = 27245111 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 (27245843) 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, 33571 + ... + 34372.

It is an arithmetic number, because the mean of its divisors is an integer number (6828372).

Almost surely, 2^27245143 is an apocalyptic number.

27245143 is a deficient number, since it is larger than the sum of its proper divisors (68345).

27245143 is an equidigital number, since it uses as much as digits as its factorization.

27245143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68344.

The product of its digits is 6720, while the sum is 28.

The square root of 27245143 is about 5219.6880174968. The cubic root of 27245143 is about 300.9052029818.

The spelling of 27245143 in words is "twenty-seven million, two hundred forty-five thousand, one hundred forty-three".