52212331 has 4 divisors (see below), whose sum is σ = 52504200. Its totient is φ = 51920464.

The previous prime is 52212317. The next prime is 52212337. The reversal of 52212331 is 13321225.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52212331 - 2⁵ = 52212299 is a prime.

It is a super-2 number, since 2×52212331² = 5452255016907122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52212299 and 52212308.

It is not an unprimeable number, because it can be changed into a prime (52212337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145666 + ... + 146023.

It is an arithmetic number, because the mean of its divisors is an integer number (13126050).

Almost surely, 2^52212331 is an apocalyptic number.

52212331 is a deficient number, since it is larger than the sum of its proper divisors (291869).

52212331 is a wasteful number, since it uses less digits than its factorization.

52212331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291868.

The product of its digits is 360, while the sum is 19.

The square root of 52212331 is about 7225.8100583948. The cubic root of 52212331 is about 373.7584564255.

Adding to 52212331 its reverse (13321225), we get a palindrome (65533556).

The spelling of 52212331 in words is "fifty-two million, two hundred twelve thousand, three hundred thirty-one".