27540531 has 12 divisors (see below), whose sum is σ = 40192152. Its totient is φ = 18170496.

The previous prime is 27540497. The next prime is 27540553. The reversal of 27540531 is 13504572.

It is a happy number.

It is not a de Polignac number, because 27540531 - 2⁶ = 27540467 is a prime.

It is a super-2 number, since 2×27540531² = 1516961695523922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27540495 and 27540504.

It is not an unprimeable number, because it can be changed into a prime (27540631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14901 + ... + 16646.

It is an arithmetic number, because the mean of its divisors is an integer number (3349346).

Almost surely, 2^27540531 is an apocalyptic number.

27540531 is a deficient number, since it is larger than the sum of its proper divisors (12651621).

27540531 is a wasteful number, since it uses less digits than its factorization.

27540531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31650 (or 31647 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 27540531 is about 5247.9072971995. The cubic root of 27540531 is about 301.9887537294.

The spelling of 27540531 in words is "twenty-seven million, five hundred forty thousand, five hundred thirty-one".