51334668 has 96 divisors (see below), whose sum is σ = 165957120. Its totient is φ = 13331520.

The previous prime is 51334649. The next prime is 51334691. The reversal of 51334668 is 86643315.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5230 + ... + 11402.

It is an arithmetic number, because the mean of its divisors is an integer number (1728720).

Almost surely, 2^51334668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51334668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82978560).

51334668 is an abundant number, since it is smaller than the sum of its proper divisors (114622452).

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

51334668 is a wasteful number, since it uses less digits than its factorization.

51334668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6204 (or 6196 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 51334668 is about 7164.8215609323. The cubic root of 51334668 is about 371.6523807799.

It can be divided in two parts, 5133 and 4668, that added together give a square (9801 = 99²).

The spelling of 51334668 in words is "fifty-one million, three hundred thirty-four thousand, six hundred sixty-eight".