27073421 has 2 divisors, whose sum is σ = 27073422. Its totient is φ = 27073420.

The previous prime is 27073411. The next prime is 27073433. The reversal of 27073421 is 12437072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19483396 + 7590025 = 4414^2 + 2755^2 .

It is a cyclic number.

It is not a de Polignac number, because 27073421 - 2¹⁸ = 26811277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27073411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13536710 + 13536711.

It is an arithmetic number, because the mean of its divisors is an integer number (13536711).

Almost surely, 2^27073421 is an apocalyptic number.

It is an amenable number.

27073421 is a deficient number, since it is larger than the sum of its proper divisors (1).

27073421 is an equidigital number, since it uses as much as digits as its factorization.

27073421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 27073421 is about 5203.2125653292. The cubic root of 27073421 is about 300.2716835156.

The spelling of 27073421 in words is "twenty-seven million, seventy-three thousand, four hundred twenty-one".