27531106 has 4 divisors (see below), whose sum is σ = 41296662. Its totient is φ = 13765552.

The previous prime is 27531083. The next prime is 27531107. The reversal of 27531106 is 60113572.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16475481 + 11055625 = 4059^2 + 3325^2 .

It is not an unprimeable number, because it can be changed into a prime (27531107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6882775 + ... + 6882778.

Almost surely, 2^27531106 is an apocalyptic number.

27531106 is the 3319-th centered pentagonal number.

27531106 is a deficient number, since it is larger than the sum of its proper divisors (13765556).

27531106 is a wasteful number, since it uses less digits than its factorization.

27531106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13765555.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 27531106 is about 5247.0092433690. The cubic root of 27531106 is about 301.9543006446.

Adding to 27531106 its reverse (60113572), we get a palindrome (87644678).

The spelling of 27531106 in words is "twenty-seven million, five hundred thirty-one thousand, one hundred six".