204051245 has 4 divisors (see below), whose sum is σ = 244861500. Its totient is φ = 163240992.

The previous prime is 204051227. The next prime is 204051257. The reversal of 204051245 is 542150402.

It is a happy number.

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 52736644 + 151314601 = 7262^2 + 12301^2 .

It is a cyclic number.

It is not a de Polignac number, because 204051245 - 2⁶ = 204051181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204051245.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20405120 + ... + 20405129.

It is an arithmetic number, because the mean of its divisors is an integer number (61215375).

Almost surely, 2^204051245 is an apocalyptic number.

It is an amenable number.

204051245 is a deficient number, since it is larger than the sum of its proper divisors (40810255).

204051245 is an equidigital number, since it uses as much as digits as its factorization.

204051245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40810254.

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

The square root of 204051245 is about 14284.6506782630. The cubic root of 204051245 is about 588.7258196021.

The spelling of 204051245 in words is "two hundred four million, fifty-one thousand, two hundred forty-five".