51951852 has 72 divisors (see below), whose sum is σ = 139426560. Its totient is φ = 16264800.

The previous prime is 51951829. The next prime is 51951853. The reversal of 51951852 is 25815915.

It is a happy number.

51951852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (51951853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103033 + ... + 103535.

It is an arithmetic number, because the mean of its divisors is an integer number (1936480).

Almost surely, 2^51951852 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 51951852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69713280).

51951852 is an abundant number, since it is smaller than the sum of its proper divisors (87474708).

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

51951852 is a wasteful number, since it uses less digits than its factorization.

51951852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683 (or 678 counting only the distinct ones).

The product of its digits is 18000, while the sum is 36.

The square root of 51951852 is about 7207.7633146490. The cubic root of 51951852 is about 373.1358795006.

The spelling of 51951852 in words is "fifty-one million, nine hundred fifty-one thousand, eight hundred fifty-two".