27155506 has 12 divisors (see below), whose sum is σ = 47383758. Its totient is φ = 11638032.

The previous prime is 27155501. The next prime is 27155549. The reversal of 27155506 is 60555172.

It can be written as a sum of positive squares in only one way, i.e., 26615281 + 540225 = 5159^2 + 735^2 .

It is a super-2 number, since 2×27155506² = 1474843012232072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27155501) 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 5 ways as a sum of consecutive naturals, for example, 138451 + ... + 138646.

Almost surely, 2^27155506 is an apocalyptic number.

27155506 is a deficient number, since it is larger than the sum of its proper divisors (20228252).

27155506 is a wasteful number, since it uses less digits than its factorization.

27155506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277113 (or 277106 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 27155506 is about 5211.0945107530. The cubic root of 27155506 is about 300.5748459517.

The spelling of 27155506 in words is "twenty-seven million, one hundred fifty-five thousand, five hundred six".