51774144 has 56 divisors (see below), whose sum is σ = 140348208. Its totient is φ = 16834560.

The previous prime is 51774143. The next prime is 51774169. The reversal of 51774144 is 44147715.

It is not an unprimeable number, because it can be changed into a prime (51774143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4584 + ... + 11160.

It is an arithmetic number, because the mean of its divisors is an integer number (2506218).

Almost surely, 2^51774144 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 51774144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70174104).

51774144 is an abundant number, since it is smaller than the sum of its proper divisors (88574064).

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

51774144 is a wasteful number, since it uses less digits than its factorization.

51774144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6633 (or 6623 counting only the distinct ones).

The product of its digits is 15680, while the sum is 33.

The square root of 51774144 is about 7195.4252132866. The cubic root of 51774144 is about 372.7099403618.

The spelling of 51774144 in words is "fifty-one million, seven hundred seventy-four thousand, one hundred forty-four".