27557141 has 2 divisors, whose sum is σ = 27557142. Its totient is φ = 27557140.

The previous prime is 27557137. The next prime is 27557183. The reversal of 27557141 is 14175572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16434916 + 11122225 = 4054^2 + 3335^2 .

It is a cyclic number.

It is not a de Polignac number, because 27557141 - 2² = 27557137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27557098 and 27557107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27557041) 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, 13778570 + 13778571.

It is an arithmetic number, because the mean of its divisors is an integer number (13778571).

Almost surely, 2^27557141 is an apocalyptic number.

It is an amenable number.

27557141 is a deficient number, since it is larger than the sum of its proper divisors (1).

27557141 is an equidigital number, since it uses as much as digits as its factorization.

27557141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9800, while the sum is 32.

The square root of 27557141 is about 5249.4895942368. The cubic root of 27557141 is about 302.0494524517.

The spelling of 27557141 in words is "twenty-seven million, five hundred fifty-seven thousand, one hundred forty-one".