51448180 has 48 divisors (see below), whose sum is σ = 124225920. Its totient is φ = 17532288.

The previous prime is 51448169. The next prime is 51448183. The reversal of 51448180 is 8184415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51448183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24034 + ... + 26086.

It is an arithmetic number, because the mean of its divisors is an integer number (2588040).

Almost surely, 2^51448180 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 51448180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62112960).

51448180 is an abundant number, since it is smaller than the sum of its proper divisors (72777740).

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

51448180 is a wasteful number, since it uses less digits than its factorization.

51448180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248 (or 2246 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 51448180 is about 7172.7386680403. The cubic root of 51448180 is about 371.9261135872.

The spelling of 51448180 in words is "fifty-one million, four hundred forty-eight thousand, one hundred eighty".