209487053 has 2 divisors, whose sum is σ = 209487054. Its totient is φ = 209487052.

The previous prime is 209487041. The next prime is 209487077. The reversal of 209487053 is 350784902.

209487053 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., 189255049 + 20232004 = 13757^2 + 4498^2 .

It is a cyclic number.

It is not a de Polignac number, because 209487053 - 2¹⁸ = 209224909 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 209486998 and 209487016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209487253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104743526 + 104743527.

It is an arithmetic number, because the mean of its divisors is an integer number (104743527).

Almost surely, 2^209487053 is an apocalyptic number.

It is an amenable number.

209487053 is a deficient number, since it is larger than the sum of its proper divisors (1).

209487053 is an equidigital number, since it uses as much as digits as its factorization.

209487053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 209487053 is about 14473.6675725263. The cubic root of 209487053 is about 593.9078456349.

The spelling of 209487053 in words is "two hundred nine million, four hundred eighty-seven thousand, fifty-three".