51313752 has 192 divisors, whose sum is σ = 172860480. Its totient is φ = 13418496.

The previous prime is 51313747. The next prime is 51313753. The reversal of 51313752 is 25731315.

It is a super-2 number, since 2×51313752² = 5266202288635008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51313753) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 454048 + ... + 454160.

It is an arithmetic number, because the mean of its divisors is an integer number (900315).

Almost surely, 2^51313752 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 51313752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86430240).

51313752 is an abundant number, since it is smaller than the sum of its proper divisors (121546728).

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

51313752 is a wasteful number, since it uses less digits than its factorization.

51313752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 195 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 51313752 is about 7163.3617806167. The cubic root of 51313752 is about 371.6018980848.

The spelling of 51313752 in words is "fifty-one million, three hundred thirteen thousand, seven hundred fifty-two".