204272521 has 2 divisors, whose sum is σ = 204272522. Its totient is φ = 204272520.

The previous prime is 204272503. The next prime is 204272603. The reversal of 204272521 is 125272402.

204272521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162282121 + 41990400 = 12739^2 + 6480^2 .

It is a cyclic number.

It is not a de Polignac number, because 204272521 - 2¹³ = 204264329 is a prime.

It is not a weakly prime, because it can be changed into another prime (204272501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102136260 + 102136261.

It is an arithmetic number, because the mean of its divisors is an integer number (102136261).

Almost surely, 2^204272521 is an apocalyptic number.

It is an amenable number.

204272521 is a deficient number, since it is larger than the sum of its proper divisors (1).

204272521 is an equidigital number, since it uses as much as digits as its factorization.

204272521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 204272521 is about 14292.3938162926. The cubic root of 204272521 is about 588.9385502059.

The spelling of 204272521 in words is "two hundred four million, two hundred seventy-two thousand, five hundred twenty-one".