27750149 has 4 divisors (see below), whose sum is σ = 31714464. Its totient is φ = 23785836.

The previous prime is 27750139. The next prime is 27750161. The reversal of 27750149 is 94105772.

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 27750149 - 2⁸ = 27749893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27750109) 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, 1982147 + ... + 1982160.

It is an arithmetic number, because the mean of its divisors is an integer number (7928616).

Almost surely, 2^27750149 is an apocalyptic number.

It is an amenable number.

27750149 is a deficient number, since it is larger than the sum of its proper divisors (3964315).

27750149 is an equidigital number, since it uses as much as digits as its factorization.

27750149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964314.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 27750149 is about 5267.8410188615. The cubic root of 27750149 is about 302.7529891878.

The spelling of 27750149 in words is "twenty-seven million, seven hundred fifty thousand, one hundred forty-nine".