27158945 has 32 divisors (see below), whose sum is σ = 38900736. Its totient is φ = 17971200.

The previous prime is 27158941. The next prime is 27158951. The reversal of 27158945 is 54985172.

It is not a de Polignac number, because 27158945 - 2² = 27158941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27158941) 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 31 ways as a sum of consecutive naturals, for example, 28517 + ... + 29453.

It is an arithmetic number, because the mean of its divisors is an integer number (1215648).

Almost surely, 2^27158945 is an apocalyptic number.

It is an amenable number.

27158945 is a deficient number, since it is larger than the sum of its proper divisors (11741791).

27158945 is a wasteful number, since it uses less digits than its factorization.

27158945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001.

The product of its digits is 100800, while the sum is 41.

The square root of 27158945 is about 5211.4244693750. The cubic root of 27158945 is about 300.5875337809.

The spelling of 27158945 in words is "twenty-seven million, one hundred fifty-eight thousand, nine hundred forty-five".