51726624 has 48 divisors (see below), whose sum is σ = 137712960. Its totient is φ = 16997120.

The previous prime is 51726617. The next prime is 51726637. The reversal of 51726624 is 42662715.

It is a tau number, because it is divible by the number of its divisors (48).

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, 3022 + ... + 10610.

It is an arithmetic number, because the mean of its divisors is an integer number (2869020).

Almost surely, 2^51726624 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 51726624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68856480).

51726624 is an abundant number, since it is smaller than the sum of its proper divisors (85986336).

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

51726624 is a wasteful number, since it uses less digits than its factorization.

51726624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7673 (or 7665 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 51726624 is about 7192.1223571349. The cubic root of 51726624 is about 372.5958770064.

The spelling of 51726624 in words is "fifty-one million, seven hundred twenty-six thousand, six hundred twenty-four".