2045043501 has 4 divisors (see below), whose sum is σ = 2726724672. Its totient is φ = 1363362332.

The previous prime is 2045043463. The next prime is 2045043521. The reversal of 2045043501 is 1053405402.

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 2045043501 - 2¹⁰ = 2045042477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045043521) 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, 340840581 + ... + 340840586.

It is an arithmetic number, because the mean of its divisors is an integer number (681681168).

Almost surely, 2^2045043501 is an apocalyptic number.

It is an amenable number.

2045043501 is a deficient number, since it is larger than the sum of its proper divisors (681681171).

2045043501 is an equidigital number, since it uses as much as digits as its factorization.

2045043501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681681170.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 2045043501 is about 45222.1571909169. The cubic root of 2045043501 is about 1269.3094600923.

Adding to 2045043501 its reverse (1053405402), we get a palindrome (3098448903).

The spelling of 2045043501 in words is "two billion, forty-five million, forty-three thousand, five hundred one".