51233660 has 12 divisors (see below), whose sum is σ = 107590728. Its totient is φ = 20493456.

The previous prime is 51233657. The next prime is 51233681. The reversal of 51233660 is 6633215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1280822 + ... + 1280861.

It is an arithmetic number, because the mean of its divisors is an integer number (8965894).

Almost surely, 2^51233660 is an apocalyptic number.

It is an amenable number.

51233660 is an abundant number, since it is smaller than the sum of its proper divisors (56357068).

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

51233660 is a wasteful number, since it uses less digits than its factorization.

51233660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561692 (or 2561690 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 51233660 is about 7157.7692055556. The cubic root of 51233660 is about 371.4084617177.

Adding to 51233660 its reverse (6633215), we get a palindrome (57866875).

The spelling of 51233660 in words is "fifty-one million, two hundred thirty-three thousand, six hundred sixty".