27078157 has 4 divisors (see below), whose sum is σ = 27654336. Its totient is φ = 26501980.

The previous prime is 27078151. The next prime is 27078167. The reversal of 27078157 is 75187072.

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 a de Polignac number, because none of the positive numbers 2^k-27078157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27078151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288019 + ... + 288112.

It is an arithmetic number, because the mean of its divisors is an integer number (6913584).

Almost surely, 2^27078157 is an apocalyptic number.

It is an amenable number.

27078157 is a deficient number, since it is larger than the sum of its proper divisors (576179).

27078157 is an equidigital number, since it uses as much as digits as its factorization.

27078157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576178.

The product of its (nonzero) digits is 27440, while the sum is 37.

The square root of 27078157 is about 5203.6676488800. The cubic root of 27078157 is about 300.2891915084.

The spelling of 27078157 in words is "twenty-seven million, seventy-eight thousand, one hundred fifty-seven".