52511233212 has 18 divisors (see below), whose sum is σ = 132736728488. Its totient is φ = 17503744392.

The previous prime is 52511233123. The next prime is 52511233283. The reversal of 52511233212 is 21233211525.

52511233212 is a `hidden beast` number, since 525 + 1 + 123 + 3 + 2 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×52511233212² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 729322648 + ... + 729322719.

Almost surely, 2^52511233212 is an apocalyptic number.

It is an amenable number.

52511233212 is an abundant number, since it is smaller than the sum of its proper divisors (80225495276).

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

52511233212 is a wasteful number, since it uses less digits than its factorization.

52511233212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458645377 (or 1458645372 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

Adding to 52511233212 its reverse (21233211525), we get a palindrome (73744444737).

The spelling of 52511233212 in words is "fifty-two billion, five hundred eleven million, two hundred thirty-three thousand, two hundred twelve".