27564131 has 8 divisors (see below), whose sum is σ = 32018784. Its totient is φ = 23238720.

The previous prime is 27564113. The next prime is 27564167. The reversal of 27564131 is 13146572.

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

It is a cyclic number.

It is not a de Polignac number, because 27564131 - 2¹⁸ = 27301987 is a prime.

It is a super-2 number, since 2×27564131² = 1519562635570322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27564094 and 27564103.

It is not an unprimeable number, because it can be changed into a prime (27564331) 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 in 7 ways as a sum of consecutive naturals, for example, 31850 + ... + 32703.

It is an arithmetic number, because the mean of its divisors is an integer number (4002348).

Almost surely, 2^27564131 is an apocalyptic number.

27564131 is a deficient number, since it is larger than the sum of its proper divisors (4454653).

27564131 is an equidigital number, since it uses as much as digits as its factorization.

27564131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64621.

The product of its digits is 5040, while the sum is 29.

The square root of 27564131 is about 5250.1553310355. The cubic root of 27564131 is about 302.0749890532.

The spelling of 27564131 in words is "twenty-seven million, five hundred sixty-four thousand, one hundred thirty-one".