27155913 has 8 divisors (see below), whose sum is σ = 36254400. Its totient is φ = 18080688.

The previous prime is 27155903. The next prime is 27155923. The reversal of 27155913 is 31955172.

It is an interprime number because it is at equal distance from previous prime (27155903) and next prime (27155923).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27155913 - 2⁵ = 27155881 is a prime.

It is a super-2 number, since 2×27155913² = 1474887221727138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27155903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2878 + ... + 7911.

It is an arithmetic number, because the mean of its divisors is an integer number (4531800).

Almost surely, 2^27155913 is an apocalyptic number.

It is an amenable number.

27155913 is a deficient number, since it is larger than the sum of its proper divisors (9098487).

27155913 is a wasteful number, since it uses less digits than its factorization.

27155913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11631.

The product of its digits is 9450, while the sum is 33.

The square root of 27155913 is about 5211.1335619038. The cubic root of 27155913 is about 300.5763475913.

The spelling of 27155913 in words is "twenty-seven million, one hundred fifty-five thousand, nine hundred thirteen".