205514489 has 2 divisors, whose sum is σ = 205514490. Its totient is φ = 205514488.

The previous prime is 205514483. The next prime is 205514521. The reversal of 205514489 is 984415502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128074489 + 77440000 = 11317^2 + 8800^2 .

It is a cyclic number.

It is not a de Polignac number, because 205514489 - 2⁸ = 205514233 is a prime.

It is a super-2 number, since 2×205514489² = 84472410377862242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (205514483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102757244 + 102757245.

It is an arithmetic number, because the mean of its divisors is an integer number (102757245).

Almost surely, 2^205514489 is an apocalyptic number.

It is an amenable number.

205514489 is a deficient number, since it is larger than the sum of its proper divisors (1).

205514489 is an equidigital number, since it uses as much as digits as its factorization.

205514489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 205514489 is about 14335.7765398321. The cubic root of 205514489 is about 590.1297129338.

The spelling of 205514489 in words is "two hundred five million, five hundred fourteen thousand, four hundred eighty-nine".