52532421 has 4 divisors (see below), whose sum is σ = 70043232. Its totient is φ = 35021612.

The previous prime is 52532419. The next prime is 52532453. The reversal of 52532421 is 12423525.

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 a cyclic number.

It is not a de Polignac number, because 52532421 - 2¹ = 52532419 is a prime.

It is a super-2 number, since 2×52532421² = 5519310512242482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52532391 and 52532400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52532461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8755401 + ... + 8755406.

It is an arithmetic number, because the mean of its divisors is an integer number (17510808).

Almost surely, 2^52532421 is an apocalyptic number.

It is an amenable number.

52532421 is a deficient number, since it is larger than the sum of its proper divisors (17510811).

52532421 is a wasteful number, since it uses less digits than its factorization.

52532421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17510810.

The product of its digits is 2400, while the sum is 24.

The square root of 52532421 is about 7247.9252893500. The cubic root of 52532421 is about 374.5206818275.

Adding to 52532421 its reverse (12423525), we get a palindrome (64955946).

The spelling of 52532421 in words is "fifty-two million, five hundred thirty-two thousand, four hundred twenty-one".