204901481 has 2 divisors, whose sum is σ = 204901482. Its totient is φ = 204901480.

The previous prime is 204901451. The next prime is 204901483. The reversal of 204901481 is 184109402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193905625 + 10995856 = 13925^2 + 3316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204901481 is a prime.

It is a super-2 number, since 2×204901481² = 83969233831986722, which contains 22 as substring.

Together with 204901483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (204901483) 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, 102450740 + 102450741.

It is an arithmetic number, because the mean of its divisors is an integer number (102450741).

Almost surely, 2^204901481 is an apocalyptic number.

It is an amenable number.

204901481 is a deficient number, since it is larger than the sum of its proper divisors (1).

204901481 is an equidigital number, since it uses as much as digits as its factorization.

204901481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 204901481 is about 14314.3802171103. The cubic root of 204901481 is about 589.5423828728.

The spelling of 204901481 in words is "two hundred four million, nine hundred one thousand, four hundred eighty-one".