51474384 has 120 divisors (see below), whose sum is σ = 160323072. Its totient is φ = 15310080.

The previous prime is 51474349. The next prime is 51474403. The reversal of 51474384 is 48347415.

51474384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51474384² = 5299224416358912, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57589 + ... + 58475.

Almost surely, 2^51474384 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 51474384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80161536).

51474384 is an abundant number, since it is smaller than the sum of its proper divisors (108848688).

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

51474384 is a wasteful number, since it uses less digits than its factorization.

51474384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945 (or 936 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 51474384 is about 7174.5650739261. The cubic root of 51474384 is about 371.9892470010.

The spelling of 51474384 in words is "fifty-one million, four hundred seventy-four thousand, three hundred eighty-four".