205053145 has 16 divisors (see below), whose sum is σ = 268878528. Its totient is φ = 148882240.

The previous prime is 205053137. The next prime is 205053161. The reversal of 205053145 is 541350502.

It is not a de Polignac number, because 205053145 - 2³ = 205053137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34482 + ... + 39988.

It is an arithmetic number, because the mean of its divisors is an integer number (16804908).

Almost surely, 2^205053145 is an apocalyptic number.

It is an amenable number.

205053145 is a deficient number, since it is larger than the sum of its proper divisors (63825383).

205053145 is a wasteful number, since it uses less digits than its factorization.

205053145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6200.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 205053145 is about 14319.6768469124. The cubic root of 205053145 is about 589.6878028476.

The spelling of 205053145 in words is "two hundred five million, fifty-three thousand, one hundred forty-five".