27980201 has 2 divisors, whose sum is σ = 27980202. Its totient is φ = 27980200.

The previous prime is 27980153. The next prime is 27980221. The reversal of 27980201 is 10208972.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26020201 + 1960000 = 5101^2 + 1400^2 .

It is a cyclic number.

It is not a de Polignac number, because 27980201 - 2⁶ = 27980137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27980221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13990100 + 13990101.

It is an arithmetic number, because the mean of its divisors is an integer number (13990101).

Almost surely, 2^27980201 is an apocalyptic number.

It is an amenable number.

27980201 is a deficient number, since it is larger than the sum of its proper divisors (1).

27980201 is an equidigital number, since it uses as much as digits as its factorization.

27980201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 27980201 is about 5289.6314616427. The cubic root of 27980201 is about 303.5873071859.

The spelling of 27980201 in words is "twenty-seven million, nine hundred eighty thousand, two hundred one".