27121355 has 4 divisors (see below), whose sum is σ = 32545632. Its totient is φ = 21697080.

The previous prime is 27121321. The next prime is 27121403. The reversal of 27121355 is 55312172.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 27121355 - 2⁶ = 27121291 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2712131 + ... + 2712140.

It is an arithmetic number, because the mean of its divisors is an integer number (8136408).

Almost surely, 2^27121355 is an apocalyptic number.

27121355 is a deficient number, since it is larger than the sum of its proper divisors (5424277).

27121355 is an equidigital number, since it uses as much as digits as its factorization.

27121355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5424276.

The product of its digits is 2100, while the sum is 26.

The square root of 27121355 is about 5207.8167210454. The cubic root of 27121355 is about 300.4487912496.

The spelling of 27121355 in words is "twenty-seven million, one hundred twenty-one thousand, three hundred fifty-five".