5212021 has 4 divisors (see below), whose sum is σ = 5224492. Its totient is φ = 5199552.

The previous prime is 5212019. The next prime is 5212027. The reversal of 5212021 is 1202125.

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 239121 + 4972900 = 489^2 + 2230^2 .

It is a cyclic number.

It is not a de Polignac number, because 5212021 - 2¹ = 5212019 is a prime.

It is a Duffinian number.

5212021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5211992 and 5212010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5212027) 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, 5586 + ... + 6451.

It is an arithmetic number, because the mean of its divisors is an integer number (1306123).

Almost surely, 2^5212021 is an apocalyptic number.

It is an amenable number.

5212021 is a deficient number, since it is larger than the sum of its proper divisors (12471).

5212021 is a wasteful number, since it uses less digits than its factorization.

5212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12470.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 5212021 is about 2282.9851072664. The cubic root of 5212021 is about 173.3812191004.

Adding to 5212021 its reverse (1202125), we get a palindrome (6414146).

The spelling of 5212021 in words is "five million, two hundred twelve thousand, twenty-one".