205455297 has 16 divisors (see below), whose sum is σ = 287013888. Its totient is φ = 130482000.

The previous prime is 205455293. The next prime is 205455307. The reversal of 205455297 is 792554502.

It is not a de Polignac number, because 205455297 - 2² = 205455293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205455293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11388 + ... + 23250.

It is an arithmetic number, because the mean of its divisors is an integer number (17938368).

Almost surely, 2^205455297 is an apocalyptic number.

It is an amenable number.

205455297 is a deficient number, since it is larger than the sum of its proper divisors (81558591).

205455297 is a wasteful number, since it uses less digits than its factorization.

205455297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12140.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 205455297 is about 14333.7119058533. The cubic root of 205455297 is about 590.0730513780.

The spelling of 205455297 in words is "two hundred five million, four hundred fifty-five thousand, two hundred ninety-seven".