52632321 has 20 divisors (see below), whose sum is σ = 81878832. Its totient is φ = 30071496.

The previous prime is 52632317. The next prime is 52632367. The reversal of 52632321 is 12323625.

It is not a de Polignac number, because 52632321 - 2² = 52632317 is a prime.

It is a super-2 number, since 2×52632321² = 5540322427694082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52632291 and 52632300.

It is not an unprimeable number, because it can be changed into a prime (52632421) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3550 + ... + 10856.

Almost surely, 2^52632321 is an apocalyptic number.

It is an amenable number.

52632321 is a deficient number, since it is larger than the sum of its proper divisors (29246511).

52632321 is an frugal number, since it uses more digits than its factorization.

52632321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7338 (or 7317 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 52632321 is about 7254.8136433681. The cubic root of 52632321 is about 374.7579380052.

Adding to 52632321 its reverse (12323625), we get a palindrome (64955946).

The spelling of 52632321 in words is "fifty-two million, six hundred thirty-two thousand, three hundred twenty-one".