52271021 has 8 divisors (see below), whose sum is σ = 58989600. Its totient is φ = 45880240.

The previous prime is 52271017. The next prime is 52271027. The reversal of 52271021 is 12017225.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52271021 - 2² = 52271017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52270984 and 52271002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52271027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81611 + ... + 82248.

It is an arithmetic number, because the mean of its divisors is an integer number (7373700).

Almost surely, 2^52271021 is an apocalyptic number.

It is an amenable number.

52271021 is a deficient number, since it is larger than the sum of its proper divisors (6718579).

52271021 is a wasteful number, since it uses less digits than its factorization.

52271021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163899.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 52271021 is about 7229.8700541573. The cubic root of 52271021 is about 373.8984467905.

Adding to 52271021 its reverse (12017225), we get a palindrome (64288246).

The spelling of 52271021 in words is "fifty-two million, two hundred seventy-one thousand, twenty-one".