27352421 has 2 divisors, whose sum is σ = 27352422. Its totient is φ = 27352420.

The previous prime is 27352397. The next prime is 27352427. The reversal of 27352421 is 12425372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26522500 + 829921 = 5150^2 + 911^2 .

It is a cyclic number.

It is not a de Polignac number, because 27352421 - 2⁶ = 27352357 is a prime.

It is a super-2 number, since 2×27352421² = 1496309869122482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27352427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13676210 + 13676211.

It is an arithmetic number, because the mean of its divisors is an integer number (13676211).

Almost surely, 2^27352421 is an apocalyptic number.

It is an amenable number.

27352421 is a deficient number, since it is larger than the sum of its proper divisors (1).

27352421 is an equidigital number, since it uses as much as digits as its factorization.

27352421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 26.

The square root of 27352421 is about 5229.9542063005. The cubic root of 27352421 is about 301.2996247513.

Adding to 27352421 its reverse (12425372), we get a palindrome (39777793).

The spelling of 27352421 in words is "twenty-seven million, three hundred fifty-two thousand, four hundred twenty-one".