205154233 has 12 divisors (see below), whose sum is σ = 212001132. Its totient is φ = 198521280.

The previous prime is 205154221. The next prime is 205154291. The reversal of 205154233 is 332451502.

It can be written as a sum of positive squares in 6 ways, for example, as 10188864 + 194965369 = 3192^2 + 13963^2 .

It is a de Polignac number, because none of the positive numbers 2^k-205154233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205154198 and 205154207.

It is not an unprimeable number, because it can be changed into a prime (205154293) 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, 378943 + ... + 379483.

It is an arithmetic number, because the mean of its divisors is an integer number (17666761).

Almost surely, 2^205154233 is an apocalyptic number.

It is an amenable number.

205154233 is a deficient number, since it is larger than the sum of its proper divisors (6846899).

205154233 is an equidigital number, since it uses as much as digits as its factorization.

205154233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 205154233 is about 14323.2061005907. The cubic root of 205154233 is about 589.7846892225.

The spelling of 205154233 in words is "two hundred five million, one hundred fifty-four thousand, two hundred thirty-three".