27232981 has 2 divisors, whose sum is σ = 27232982. Its totient is φ = 27232980.

The previous prime is 27232967. The next prime is 27233029. The reversal of 27232981 is 18923272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20295025 + 6937956 = 4505^2 + 2634^2 .

It is a cyclic number.

It is not a de Polignac number, because 27232981 - 2⁵ = 27232949 is a prime.

It is a super-2 number, since 2×27232981² = 1483270508292722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27232081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13616490 + 13616491.

It is an arithmetic number, because the mean of its divisors is an integer number (13616491).

Almost surely, 2^27232981 is an apocalyptic number.

It is an amenable number.

27232981 is a deficient number, since it is larger than the sum of its proper divisors (1).

27232981 is an equidigital number, since it uses as much as digits as its factorization.

27232981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 27232981 is about 5218.5228752972. The cubic root of 27232981 is about 300.8604224772.

The spelling of 27232981 in words is "twenty-seven million, two hundred thirty-two thousand, nine hundred eighty-one".