205772151 has 12 divisors (see below), whose sum is σ = 295596392. Its totient is φ = 126573888.

The previous prime is 205772113. The next prime is 205772167. The reversal of 205772151 is 151277502.

It is not a de Polignac number, because 205772151 - 2¹⁸ = 205510007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205772051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88435 + ... + 90731.

Almost surely, 2^205772151 is an apocalyptic number.

205772151 is a deficient number, since it is larger than the sum of its proper divisors (89824241).

205772151 is an frugal number, since it uses more digits than its factorization.

205772151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4610 (or 2313 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 205772151 is about 14344.7604023211. The cubic root of 205772151 is about 590.3762332669.

The spelling of 205772151 in words is "two hundred five million, seven hundred seventy-two thousand, one hundred fifty-one".