52043421 has 4 divisors (see below), whose sum is σ = 69391232. Its totient is φ = 34695612.

The previous prime is 52043419. The next prime is 52043441. The reversal of 52043421 is 12434025.

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 not a de Polignac number, because 52043421 - 2¹ = 52043419 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 (52043401) 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, 8673901 + ... + 8673906.

It is an arithmetic number, because the mean of its divisors is an integer number (17347808).

Almost surely, 2^52043421 is an apocalyptic number.

It is an amenable number.

52043421 is a deficient number, since it is larger than the sum of its proper divisors (17347811).

52043421 is a wasteful number, since it uses less digits than its factorization.

52043421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17347810.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 52043421 is about 7214.1126273437. The cubic root of 52043421 is about 373.3549773981.

Adding to 52043421 its reverse (12434025), we get a palindrome (64477446).

The spelling of 52043421 in words is "fifty-two million, forty-three thousand, four hundred twenty-one".