52842021 has 16 divisors (see below), whose sum is σ = 74370240. Its totient is φ = 33281280.

The previous prime is 52841951. The next prime is 52842047. The reversal of 52842021 is 12024825.

It is not a de Polignac number, because 52842021 - 2¹⁷ = 52710949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52841982 and 52842000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52842121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23611 + ... + 25751.

It is an arithmetic number, because the mean of its divisors is an integer number (4648140).

Almost surely, 2^52842021 is an apocalyptic number.

It is an amenable number.

52842021 is a deficient number, since it is larger than the sum of its proper divisors (21528219).

52842021 is a wasteful number, since it uses less digits than its factorization.

52842021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 52842021 is about 7269.2517496645. The cubic root of 52842021 is about 375.2549874666.

Adding to 52842021 its reverse (12024825), we get a palindrome (64866846).

The spelling of 52842021 in words is "fifty-two million, eight hundred forty-two thousand, twenty-one".