52011021 has 4 divisors (see below), whose sum is σ = 69348032. Its totient is φ = 34674012.

The previous prime is 52010957. The next prime is 52011031. The reversal of 52011021 is 12011025.

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 52011021 - 2⁶ = 52010957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52010988 and 52011006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52011031) 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, 8668501 + ... + 8668506.

It is an arithmetic number, because the mean of its divisors is an integer number (17337008).

Almost surely, 2^52011021 is an apocalyptic number.

It is an amenable number.

52011021 is a deficient number, since it is larger than the sum of its proper divisors (17337011).

52011021 is a wasteful number, since it uses less digits than its factorization.

52011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17337010.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 52011021 is about 7211.8666793002. The cubic root of 52011021 is about 373.2774830533.

Adding to 52011021 its reverse (12011025), we get a palindrome (64022046).

The spelling of 52011021 in words is "fifty-two million, eleven thousand, twenty-one".