205145046 has 12 divisors (see below), whose sum is σ = 444480972. Its totient is φ = 68381676.

The previous prime is 205145023. The next prime is 205145047. The reversal of 205145046 is 640541502.

205145046 is a `hidden beast` number, since 205 + 1 + 450 + 4 + 6 = 666.

205145046 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205145047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5698456 + ... + 5698491.

It is an arithmetic number, because the mean of its divisors is an integer number (37040081).

Almost surely, 2^205145046 is an apocalyptic number.

205145046 is an abundant number, since it is smaller than the sum of its proper divisors (239335926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205145046 is a wasteful number, since it uses less digits than its factorization.

205145046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11396955 (or 11396952 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 205145046 is about 14322.8853936628. The cubic root of 205145046 is about 589.7758853862.

Adding to 205145046 its reverse (640541502), we get a palindrome (845686548).

The spelling of 205145046 in words is "two hundred five million, one hundred forty-five thousand, forty-six".