209114533 has 2 divisors, whose sum is σ = 209114534. Its totient is φ = 209114532.

The previous prime is 209114441. The next prime is 209114537. The reversal of 209114533 is 335411902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208571364 + 543169 = 14442^2 + 737^2 .

It is a cyclic number.

It is not a de Polignac number, because 209114533 - 2¹⁷ = 208983461 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209114537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104557266 + 104557267.

It is an arithmetic number, because the mean of its divisors is an integer number (104557267).

Almost surely, 2^209114533 is an apocalyptic number.

It is an amenable number.

209114533 is a deficient number, since it is larger than the sum of its proper divisors (1).

209114533 is an equidigital number, since it uses as much as digits as its factorization.

209114533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 209114533 is about 14460.7929588941. The cubic root of 209114533 is about 593.5555982150. Note that the first 4 decimals are identical.

The spelling of 209114533 in words is "two hundred nine million, one hundred fourteen thousand, five hundred thirty-three".