27251145 has 24 divisors (see below), whose sum is σ = 47376576. Its totient is φ = 14490528.

The previous prime is 27251131. The next prime is 27251167. The reversal of 27251145 is 54115272.

It is not a de Polignac number, because 27251145 - 2¹⁰ = 27250121 is a prime.

It is a super-2 number, since 2×27251145² = 1485249807622050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19252 + ... + 20618.

It is an arithmetic number, because the mean of its divisors is an integer number (1974024).

Almost surely, 2^27251145 is an apocalyptic number.

It is an amenable number.

27251145 is a deficient number, since it is larger than the sum of its proper divisors (20125431).

27251145 is a wasteful number, since it uses less digits than its factorization.

27251145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821 (or 1818 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 27251145 is about 5220.2629244129. The cubic root of 27251145 is about 300.9272974450.

The spelling of 27251145 in words is "twenty-seven million, two hundred fifty-one thousand, one hundred forty-five".