52600021 has 4 divisors (see below), whose sum is σ = 53082700. Its totient is φ = 52117344.

The previous prime is 52600019. The next prime is 52600033. The reversal of 52600021 is 12000625.

It is a happy number.

52600021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16719921 + 35880100 = 4089^2 + 5990^2 .

It is a cyclic number.

It is not a de Polignac number, because 52600021 - 2¹ = 52600019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52599968 and 52600004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52600081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241176 + ... + 241393.

It is an arithmetic number, because the mean of its divisors is an integer number (13270675).

Almost surely, 2^52600021 is an apocalyptic number.

It is an amenable number.

52600021 is a deficient number, since it is larger than the sum of its proper divisors (482679).

52600021 is a wasteful number, since it uses less digits than its factorization.

52600021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482678.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 52600021 is about 7252.5871935469. The cubic root of 52600021 is about 374.6812604162.

Adding to 52600021 its reverse (12000625), we get a palindrome (64600646).

The spelling of 52600021 in words is "fifty-two million, six hundred thousand, twenty-one".