27653231 has 2 divisors, whose sum is σ = 27653232. Its totient is φ = 27653230.

The previous prime is 27653221. The next prime is 27653251. The reversal of 27653231 is 13235672.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27653231 - 2²² = 23458927 is a prime.

It is a super-2 number, since 2×27653231² = 1529402369478722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 27653194 and 27653203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27653221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13826615 + 13826616.

It is an arithmetic number, because the mean of its divisors is an integer number (13826616).

Almost surely, 2^27653231 is an apocalyptic number.

27653231 is a deficient number, since it is larger than the sum of its proper divisors (1).

27653231 is an equidigital number, since it uses as much as digits as its factorization.

27653231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 29.

The square root of 27653231 is about 5258.6339480896. The cubic root of 27653231 is about 302.4001209314.

The spelling of 27653231 in words is "twenty-seven million, six hundred fifty-three thousand, two hundred thirty-one".