51443501200 has 120 divisors (see below), whose sum is σ = 152114583488. Its totient is φ = 16281008640.

The previous prime is 51443501159. The next prime is 51443501201. The reversal of 51443501200 is 210534415.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (51443501201) 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, 670242 + ... + 743041.

Almost surely, 2^51443501200 is an apocalyptic number.

51443501200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51443501200 is an abundant number, since it is smaller than the sum of its proper divisors (100671082288).

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

51443501200 is a wasteful number, since it uses less digits than its factorization.

51443501200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413321 (or 1413310 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 51443501200 in words is "fifty-one billion, four hundred forty-three million, five hundred one thousand, two hundred".