43053021 has 24 divisors (see below), whose sum is σ = 68065920. Its totient is φ = 26006400.

The previous prime is 43052983. The next prime is 43053029. The reversal of 43053021 is 12035034.

It is not a de Polignac number, because 43053021 - 2⁹ = 43052509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43052985 and 43053003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43053029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42165 + ... + 43173.

It is an arithmetic number, because the mean of its divisors is an integer number (2836080).

Almost surely, 2^43053021 is an apocalyptic number.

It is an amenable number.

43053021 is a deficient number, since it is larger than the sum of its proper divisors (25012899).

43053021 is a wasteful number, since it uses less digits than its factorization.

43053021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457 (or 1454 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 43053021 is about 6561.4800921743. The cubic root of 43053021 is about 350.4837419869.

Adding to 43053021 its reverse (12035034), we get a palindrome (55088055).

The spelling of 43053021 in words is "forty-three million, fifty-three thousand, twenty-one".