52002021 has 4 divisors (see below), whose sum is σ = 69336032. Its totient is φ = 34668012.

The previous prime is 52002019. The next prime is 52002023. The reversal of 52002021 is 12020025.

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 an interprime number because it is at equal distance from previous prime (52002019) and next prime (52002023).

It is not a de Polignac number, because 52002021 - 2¹ = 52002019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52001988 and 52002006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52002023) 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, 8667001 + ... + 8667006.

It is an arithmetic number, because the mean of its divisors is an integer number (17334008).

Almost surely, 2^52002021 is an apocalyptic number.

It is an amenable number.

52002021 is a deficient number, since it is larger than the sum of its proper divisors (17334011).

52002021 is a wasteful number, since it uses less digits than its factorization.

52002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17334010.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 52002021 is about 7211.2426807035. The cubic root of 52002021 is about 373.2559511351.

Adding to 52002021 its reverse (12020025), we get a palindrome (64022046).

The spelling of 52002021 in words is "fifty-two million, two thousand, twenty-one".