2043515021 has 8 divisors (see below), whose sum is σ = 2092270080. Its totient is φ = 1994979888.

The previous prime is 2043514969. The next prime is 2043515059. The reversal of 2043515021 is 1205153402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2043515021 - 2¹⁴ = 2043498637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043514021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36101 + ... + 73418.

It is an arithmetic number, because the mean of its divisors is an integer number (261533760).

Almost surely, 2^2043515021 is an apocalyptic number.

It is an amenable number.

2043515021 is a deficient number, since it is larger than the sum of its proper divisors (48755059).

2043515021 is a wasteful number, since it uses less digits than its factorization.

2043515021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109963.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2043515021 is about 45205.2543516791. The cubic root of 2043515021 is about 1268.9931509811.

Adding to 2043515021 its reverse (1205153402), we get a palindrome (3248668423).

The spelling of 2043515021 in words is "two billion, forty-three million, five hundred fifteen thousand, twenty-one".