6556201 has 2 divisors, whose sum is σ = 6556202. Its totient is φ = 6556200.

The previous prime is 6556111. The next prime is 6556223. The reversal of 6556201 is 1026556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6553600 + 2601 = 2560^2 + 51^2 .

It is a cyclic number.

It is not a de Polignac number, because 6556201 - 2¹¹ = 6554153 is a prime.

6556201 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6556301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3278100 + 3278101.

It is an arithmetic number, because the mean of its divisors is an integer number (3278101).

Almost surely, 2^6556201 is an apocalyptic number.

It is an amenable number.

6556201 is a deficient number, since it is larger than the sum of its proper divisors (1).

6556201 is an equidigital number, since it uses as much as digits as its factorization.

6556201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 6556201 is about 2560.5079574178. The cubic root of 6556201 is about 187.1618890354.

The spelling of 6556201 in words is "six million, five hundred fifty-six thousand, two hundred one".