27155893 has 4 divisors (see below), whose sum is σ = 28336608. Its totient is φ = 25975180.

The previous prime is 27155881. The next prime is 27155903. The reversal of 27155893 is 39855172.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27155893 - 2²¹ = 25058741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27155813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590323 + ... + 590368.

It is an arithmetic number, because the mean of its divisors is an integer number (7084152).

Almost surely, 2^27155893 is an apocalyptic number.

27155893 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

27155893 is a deficient number, since it is larger than the sum of its proper divisors (1180715).

27155893 is a wasteful number, since it uses less digits than its factorization.

27155893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180714.

The product of its digits is 75600, while the sum is 40.

The square root of 27155893 is about 5211.1316429352. The cubic root of 27155893 is about 300.5762738010.

The spelling of 27155893 in words is "twenty-seven million, one hundred fifty-five thousand, eight hundred ninety-three".