51242232 has 32 divisors (see below), whose sum is σ = 128321280. Its totient is φ = 17052000.

The previous prime is 51242231. The next prime is 51242237. The reversal of 51242232 is 23224215.

It is a junction number, because it is equal to n+sod(n) for n = 51242199 and 51242208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51242231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16603 + ... + 19445.

It is an arithmetic number, because the mean of its divisors is an integer number (4010040).

Almost surely, 2^51242232 is an apocalyptic number.

It is an amenable number.

51242232 is an abundant number, since it is smaller than the sum of its proper divisors (77079048).

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

51242232 is a wasteful number, since it uses less digits than its factorization.

51242232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3603 (or 3599 counting only the distinct ones).

The product of its digits is 960, while the sum is 21.

The square root of 51242232 is about 7158.3679704245. The cubic root of 51242232 is about 371.4291742453.

Adding to 51242232 its reverse (23224215), we get a palindrome (74466447).

The spelling of 51242232 in words is "fifty-one million, two hundred forty-two thousand, two hundred thirty-two".