205151279 has 2 divisors, whose sum is σ = 205151280. Its totient is φ = 205151278.

The previous prime is 205151239. The next prime is 205151293. The reversal of 205151279 is 972151502.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205151279 - 2²⁴ = 188374063 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205151239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102575639 + 102575640.

It is an arithmetic number, because the mean of its divisors is an integer number (102575640).

Almost surely, 2^205151279 is an apocalyptic number.

205151279 is a deficient number, since it is larger than the sum of its proper divisors (1).

205151279 is an equidigital number, since it uses as much as digits as its factorization.

205151279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 205151279 is about 14323.1029808488. The cubic root of 205151279 is about 589.7818584541.

The spelling of 205151279 in words is "two hundred five million, one hundred fifty-one thousand, two hundred seventy-nine".