27481351 has 4 divisors (see below), whose sum is σ = 27494352. Its totient is φ = 27468352.

The previous prime is 27481319. The next prime is 27481369. The reversal of 27481351 is 15318472.

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 27481351 - 2⁵ = 27481319 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27481381) 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, 2515 + ... + 7828.

It is an arithmetic number, because the mean of its divisors is an integer number (6873588).

Almost surely, 2^27481351 is an apocalyptic number.

27481351 is the 3316-th centered pentagonal number.

27481351 is a deficient number, since it is larger than the sum of its proper divisors (13001).

27481351 is a wasteful number, since it uses less digits than its factorization.

27481351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13000.

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

The square root of 27481351 is about 5242.2658269111. The cubic root of 27481351 is about 301.7722908146.

The spelling of 27481351 in words is "twenty-seven million, four hundred eighty-one thousand, three hundred fifty-one".