51477888 has 128 divisors (see below), whose sum is σ = 170576640. Its totient is φ = 13363200.

The previous prime is 51477847. The next prime is 51477931. The reversal of 51477888 is 88877415.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28698 + ... + 30438.

It is an arithmetic number, because the mean of its divisors is an integer number (1332630).

Almost surely, 2^51477888 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 51477888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85288320).

51477888 is an abundant number, since it is smaller than the sum of its proper divisors (119098752).

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

51477888 is a wasteful number, since it uses less digits than its factorization.

51477888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776 (or 1764 counting only the distinct ones).

The product of its digits is 501760, while the sum is 48.

The square root of 51477888 is about 7174.8092657575. The cubic root of 51477888 is about 371.9976875796.

The spelling of 51477888 in words is "fifty-one million, four hundred seventy-seven thousand, eight hundred eighty-eight".