51023744 has 32 divisors (see below), whose sum is σ = 102336600. Its totient is φ = 25339392.

The previous prime is 51023743. The next prime is 51023761. The reversal of 51023744 is 44732015.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51023743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18827 + ... + 21365.

Almost surely, 2^51023744 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 51023744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51168300).

51023744 is an abundant number, since it is smaller than the sum of its proper divisors (51312856).

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

51023744 is a wasteful number, since it uses less digits than its factorization.

51023744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710 (or 2698 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 51023744 is about 7143.0906476119. The cubic root of 51023744 is about 370.9005189495.

Adding to 51023744 its reverse (44732015), we get a palindrome (95755759).

The spelling of 51023744 in words is "fifty-one million, twenty-three thousand, seven hundred forty-four".