51444600 has 96 divisors (see below), whose sum is σ = 160704000. Its totient is φ = 13613440.

The previous prime is 51444599. The next prime is 51444607. The reversal of 51444600 is 644415.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51444607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107161 + ... + 107639.

It is an arithmetic number, because the mean of its divisors is an integer number (1674000).

Almost surely, 2^51444600 is an apocalyptic number.

51444600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51444600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80352000).

51444600 is an abundant number, since it is smaller than the sum of its proper divisors (109259400).

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

51444600 is a wasteful number, since it uses less digits than its factorization.

51444600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 51444600 is about 7172.4891076948. The cubic root of 51444600 is about 371.9174866129.

The spelling of 51444600 in words is "fifty-one million, four hundred forty-four thousand, six hundred".