51544500 has 96 divisors (see below), whose sum is σ = 171575040. Its totient is φ = 11779200.

The previous prime is 51544489. The next prime is 51544501. The reversal of 51544500 is 544515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51544501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8046 + ... + 12954.

It is an arithmetic number, because the mean of its divisors is an integer number (1787240).

Almost surely, 2^51544500 is an apocalyptic number.

51544500 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 51544500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85787520).

51544500 is an abundant number, since it is smaller than the sum of its proper divisors (120030540).

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

51544500 is a wasteful number, since it uses less digits than its factorization.

51544500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4938 (or 4926 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 51544500 is about 7179.4498396465. The cubic root of 51544500 is about 372.1580724907.

The spelling of 51544500 in words is "fifty-one million, five hundred forty-four thousand, five hundred".