205475045 has 4 divisors (see below), whose sum is σ = 246570060. Its totient is φ = 164380032.

The previous prime is 205475033. The next prime is 205475047. The reversal of 205475045 is 540574502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40018276 + 165456769 = 6326^2 + 12863^2 .

It is a cyclic number.

It is not a de Polignac number, because 205475045 - 2²² = 201280741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205475047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20547500 + ... + 20547509.

It is an arithmetic number, because the mean of its divisors is an integer number (61642515).

Almost surely, 2^205475045 is an apocalyptic number.

It is an amenable number.

205475045 is a deficient number, since it is larger than the sum of its proper divisors (41095015).

205475045 is an equidigital number, since it uses as much as digits as its factorization.

205475045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41095014.

The product of its (nonzero) digits is 28000, while the sum is 32.

The square root of 205475045 is about 14334.4007548275. The cubic root of 205475045 is about 590.0919563652.

The spelling of 205475045 in words is "two hundred five million, four hundred seventy-five thousand, forty-five".