27145169 has 12 divisors (see below), whose sum is σ = 28417716. Its totient is φ = 25919712.

The previous prime is 27145163. The next prime is 27145187. The reversal of 27145169 is 96154172.

It can be written as a sum of positive squares in 2 ways, for example, as 11833600 + 15311569 = 3440^2 + 3913^2 .

It is not a de Polignac number, because 27145169 - 2¹² = 27141073 is a prime.

It is a super-2 number, since 2×27145169² = 1473720400077122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27145163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97859 + ... + 98135.

It is an arithmetic number, because the mean of its divisors is an integer number (2368143).

Almost surely, 2^27145169 is an apocalyptic number.

It is an amenable number.

27145169 is a deficient number, since it is larger than the sum of its proper divisors (1272547).

27145169 is an equidigital number, since it uses as much as digits as its factorization.

27145169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 373 counting only the distinct ones).

The product of its digits is 15120, while the sum is 35.

The square root of 27145169 is about 5210.1025901608. The cubic root of 27145169 is about 300.5367022261.

The spelling of 27145169 in words is "twenty-seven million, one hundred forty-five thousand, one hundred sixty-nine".