27735121 has 2 divisors, whose sum is σ = 27735122. Its totient is φ = 27735120.

The previous prime is 27735101. The next prime is 27735151. The reversal of 27735121 is 12153772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15054400 + 12680721 = 3880^2 + 3561^2 .

It is a cyclic number.

It is not a de Polignac number, because 27735121 - 2¹¹ = 27733073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27735121.

It is not a weakly prime, because it can be changed into another prime (27735101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13867560 + 13867561.

It is an arithmetic number, because the mean of its divisors is an integer number (13867561).

Almost surely, 2^27735121 is an apocalyptic number.

It is an amenable number.

27735121 is a deficient number, since it is larger than the sum of its proper divisors (1).

27735121 is an equidigital number, since it uses as much as digits as its factorization.

27735121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2940, while the sum is 28.

The square root of 27735121 is about 5266.4144348883. The cubic root of 27735121 is about 302.6983276979.

Adding to 27735121 its reverse (12153772), we get a palindrome (39888893).

The spelling of 27735121 in words is "twenty-seven million, seven hundred thirty-five thousand, one hundred twenty-one".