52321612 has 18 divisors (see below), whose sum is σ = 106512252. Its totient is φ = 22423464.

The previous prime is 52321571. The next prime is 52321627. The reversal of 52321612 is 21612325.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133278 + ... + 133669.

Almost surely, 2^52321612 is an apocalyptic number.

It is an amenable number.

52321612 is an abundant number, since it is smaller than the sum of its proper divisors (54190640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52321612 is a wasteful number, since it uses less digits than its factorization.

52321612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266965 (or 266956 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 52321612 is about 7233.3679569064. The cubic root of 52321612 is about 374.0190349392.

Adding to 52321612 its reverse (21612325), we get a palindrome (73933937).

The spelling of 52321612 in words is "fifty-two million, three hundred twenty-one thousand, six hundred twelve".