27740533 has 2 divisors, whose sum is σ = 27740534. Its totient is φ = 27740532.

The previous prime is 27740521. The next prime is 27740539. The reversal of 27740533 is 33504772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17455684 + 10284849 = 4178^2 + 3207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27740533 is a prime.

It is a super-2 number, since 2×27740533² = 1539074342248178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27740495 and 27740504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27740539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13870266 + 13870267.

It is an arithmetic number, because the mean of its divisors is an integer number (13870267).

Almost surely, 2^27740533 is an apocalyptic number.

It is an amenable number.

27740533 is a deficient number, since it is larger than the sum of its proper divisors (1).

27740533 is an equidigital number, since it uses as much as digits as its factorization.

27740533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 31.

The square root of 27740533 is about 5266.9282319014. The cubic root of 27740533 is about 302.7180150924.

The spelling of 27740533 in words is "twenty-seven million, seven hundred forty thousand, five hundred thirty-three".