205501541 has 6 divisors (see below), whose sum is σ = 239052870. Its totient is φ = 176144136.

The previous prime is 205501459. The next prime is 205501561. The reversal of 205501541 is 145105502.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 162664516 + 42837025 = 12754^2 + 6545^2 .

It is not a de Polignac number, because 205501541 - 2¹⁴ = 205485157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205501561) 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, 2096906 + ... + 2097003.

It is an arithmetic number, because the mean of its divisors is an integer number (39842145).

Almost surely, 2^205501541 is an apocalyptic number.

It is an amenable number.

205501541 is a deficient number, since it is larger than the sum of its proper divisors (33551329).

205501541 is an equidigital number, since it uses as much as digits as its factorization.

205501541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193923 (or 4193916 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 205501541 is about 14335.3249352779. The cubic root of 205501541 is about 590.1173193875.

The spelling of 205501541 in words is "two hundred five million, five hundred one thousand, five hundred forty-one".