27531121 has 8 divisors (see below), whose sum is σ = 28558080. Its totient is φ = 26509392.

The previous prime is 27531113. The next prime is 27531139. The reversal of 27531121 is 12113572.

It is a happy number.

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 27531121 - 2³ = 27531113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27531092 and 27531101.

It is not an unprimeable number, because it can be changed into a prime (27531151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11776 + ... + 13918.

It is an arithmetic number, because the mean of its divisors is an integer number (3569760).

Almost surely, 2^27531121 is an apocalyptic number.

It is an amenable number.

27531121 is a deficient number, since it is larger than the sum of its proper divisors (1026959).

27531121 is a wasteful number, since it uses less digits than its factorization.

27531121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615.

The product of its digits is 420, while the sum is 22.

The square root of 27531121 is about 5247.0106727545. The cubic root of 27531121 is about 301.9543554834.

Adding to 27531121 its reverse (12113572), we get a palindrome (39644693).

The spelling of 27531121 in words is "twenty-seven million, five hundred thirty-one thousand, one hundred twenty-one".