51235212 has 48 divisors (see below), whose sum is σ = 144668160. Its totient is φ = 13777152.

The previous prime is 51235207. The next prime is 51235241. The reversal of 51235212 is 21253215.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16512 + ... + 19367.

It is an arithmetic number, because the mean of its divisors is an integer number (3013920).

Almost surely, 2^51235212 is an apocalyptic number.

It is an amenable number.

51235212 is an abundant number, since it is smaller than the sum of its proper divisors (93432948).

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

51235212 is a wasteful number, since it uses less digits than its factorization.

51235212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35910 (or 35908 counting only the distinct ones).

The product of its digits is 600, while the sum is 21.

The square root of 51235212 is about 7157.8776184006. The cubic root of 51235212 is about 371.4122119873.

Adding to 51235212 its reverse (21253215), we get a palindrome (72488427).

The spelling of 51235212 in words is "fifty-one million, two hundred thirty-five thousand, two hundred twelve".