52525221 has 8 divisors (see below), whose sum is σ = 80038464. Its totient is φ = 30014400.

The previous prime is 52525201. The next prime is 52525259. The reversal of 52525221 is 12252525.

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

It is not a de Polignac number, because 52525221 - 2⁷ = 52525093 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 52525191 and 52525200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52525201) 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, 1250580 + ... + 1250621.

It is an arithmetic number, because the mean of its divisors is an integer number (10004808).

Almost surely, 2^52525221 is an apocalyptic number.

It is an amenable number.

52525221 is a deficient number, since it is larger than the sum of its proper divisors (27513243).

52525221 is a wasteful number, since it uses less digits than its factorization.

52525221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501211.

The product of its digits is 2000, while the sum is 24.

The square root of 52525221 is about 7247.4285784684. The cubic root of 52525221 is about 374.5035706667.

Adding to 52525221 its reverse (12252525), we get a palindrome (64777746).

The spelling of 52525221 in words is "fifty-two million, five hundred twenty-five thousand, two hundred twenty-one".