27139251 has 8 divisors (see below), whose sum is σ = 36336784. Its totient is φ = 18017280.

The previous prime is 27139249. The next prime is 27139267. The reversal of 27139251 is 15293172.

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

It is not a de Polignac number, because 27139251 - 2¹ = 27139249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27139271) 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, 18046 + ... + 19491.

It is an arithmetic number, because the mean of its divisors is an integer number (4542098).

Almost surely, 2^27139251 is an apocalyptic number.

27139251 is a deficient number, since it is larger than the sum of its proper divisors (9197533).

27139251 is a wasteful number, since it uses less digits than its factorization.

27139251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37781.

The product of its digits is 3780, while the sum is 30.

The square root of 27139251 is about 5209.5346241291. The cubic root of 27139251 is about 300.5148603351.

The spelling of 27139251 in words is "twenty-seven million, one hundred thirty-nine thousand, two hundred fifty-one".