27845451 has 10 divisors (see below), whose sum is σ = 41596412. Its totient is φ = 18563580.

The previous prime is 27845449. The next prime is 27845513. The reversal of 27845451 is 15454872.

It is not a de Polignac number, because 27845451 - 2¹ = 27845449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27845351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 171805 + ... + 171966.

Almost surely, 2^27845451 is an apocalyptic number.

27845451 is a deficient number, since it is larger than the sum of its proper divisors (13750961).

27845451 is an equidigital number, since it uses as much as digits as its factorization.

27845451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343783 (or 343774 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 27845451 is about 5276.8789070813. The cubic root of 27845451 is about 303.0991734967.

The spelling of 27845451 in words is "twenty-seven million, eight hundred forty-five thousand, four hundred fifty-one".