51547408 has 40 divisors (see below), whose sum is σ = 109992960. Its totient is φ = 23207040.

The previous prime is 51547369. The next prime is 51547459. The reversal of 51547408 is 80474515.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17841 + ... + 20527.

It is an arithmetic number, because the mean of its divisors is an integer number (2749824).

Almost surely, 2^51547408 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 51547408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54996480).

51547408 is an abundant number, since it is smaller than the sum of its proper divisors (58445552).

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

51547408 is a wasteful number, since it uses less digits than its factorization.

51547408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815 (or 2809 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 51547408 is about 7179.6523592720. The cubic root of 51547408 is about 372.1650710733.

The spelling of 51547408 in words is "fifty-one million, five hundred forty-seven thousand, four hundred eight".