205520441 has 4 divisors (see below), whose sum is σ = 234880512. Its totient is φ = 176160372.

The previous prime is 205520431. The next prime is 205520443. The reversal of 205520441 is 144025502.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 205520441 - 2⁶ = 205520377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205520443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14680025 + ... + 14680038.

It is an arithmetic number, because the mean of its divisors is an integer number (58720128).

Almost surely, 2^205520441 is an apocalyptic number.

It is an amenable number.

205520441 is a deficient number, since it is larger than the sum of its proper divisors (29360071).

205520441 is an equidigital number, since it uses as much as digits as its factorization.

205520441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29360070.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 205520441 is about 14335.9841308506. The cubic root of 205520441 is about 590.1354098852.

Adding to 205520441 its reverse (144025502), we get a palindrome (349545943).

The spelling of 205520441 in words is "two hundred five million, five hundred twenty thousand, four hundred forty-one".