27438151 has 4 divisors (see below), whose sum is σ = 29548792. Its totient is φ = 25327512.

The previous prime is 27438137. The next prime is 27438157. The reversal of 27438151 is 15183472.

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

It is a cyclic number.

It is not a de Polignac number, because 27438151 - 2¹⁵ = 27405383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27438157) 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, 1055301 + ... + 1055326.

It is an arithmetic number, because the mean of its divisors is an integer number (7387198).

Almost surely, 2^27438151 is an apocalyptic number.

27438151 is a deficient number, since it is larger than the sum of its proper divisors (2110641).

27438151 is a wasteful number, since it uses less digits than its factorization.

27438151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110640.

The product of its digits is 6720, while the sum is 31.

The square root of 27438151 is about 5238.1438506402. The cubic root of 27438151 is about 301.6140817078.

The spelling of 27438151 in words is "twenty-seven million, four hundred thirty-eight thousand, one hundred fifty-one".