51523744 has 48 divisors (see below), whose sum is σ = 108168480. Its totient is φ = 24088320.

The previous prime is 51523727. The next prime is 51523783. The reversal of 51523744 is 44732515.

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, 49954 + ... + 50974.

It is an arithmetic number, because the mean of its divisors is an integer number (2253510).

Almost surely, 2^51523744 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 51523744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54084240).

51523744 is an abundant number, since it is smaller than the sum of its proper divisors (56644736).

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

51523744 is a wasteful number, since it uses less digits than its factorization.

51523744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1125 counting only the distinct ones).

The product of its digits is 16800, while the sum is 31.

The square root of 51523744 is about 7178.0041794360. The cubic root of 51523744 is about 372.1081121003.

The spelling of 51523744 in words is "fifty-one million, five hundred twenty-three thousand, seven hundred forty-four".