51723776 has 80 divisors (see below), whose sum is σ = 117440400. Its totient is φ = 22560768.

The previous prime is 51723769. The next prime is 51723811. The reversal of 51723776 is 67732715.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

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, 126260 + ... + 126668.

It is an arithmetic number, because the mean of its divisors is an integer number (1468005).

Almost surely, 2^51723776 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 51723776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58720200).

51723776 is an abundant number, since it is smaller than the sum of its proper divisors (65716624).

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

51723776 is a wasteful number, since it uses less digits than its factorization.

51723776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459 (or 443 counting only the distinct ones).

The product of its digits is 61740, while the sum is 38.

The square root of 51723776 is about 7191.9243600027. The cubic root of 51723776 is about 372.5890386676.

The spelling of 51723776 in words is "fifty-one million, seven hundred twenty-three thousand, seven hundred seventy-six".