2045000321 has 32 divisors (see below), whose sum is σ = 2583060480. Its totient is φ = 1575733824.

The previous prime is 2045000317. The next prime is 2045000327. The reversal of 2045000321 is 1230005402.

It is not a de Polignac number, because 2045000321 - 2² = 2045000317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2045000321.

It is not an unprimeable number, because it can be changed into a prime (2045000327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1967720 + ... + 1968758.

It is an arithmetic number, because the mean of its divisors is an integer number (80720640).

Almost surely, 2^2045000321 is an apocalyptic number.

It is an amenable number.

2045000321 is a deficient number, since it is larger than the sum of its proper divisors (538060159).

2045000321 is a wasteful number, since it uses less digits than its factorization.

2045000321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2045000321 is about 45221.6797675628. The cubic root of 2045000321 is about 1269.3005264325.

Adding to 2045000321 its reverse (1230005402), we get a palindrome (3275005723).

The spelling of 2045000321 in words is "two billion, forty-five million, three hundred twenty-one", and thus it is an aban number.