51731032200 has 96 divisors (see below), whose sum is σ = 160937422560. Its totient is φ = 13745804800.

The previous prime is 51731032189. The next prime is 51731032207. The reversal of 51731032200 is 223013715.

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

It is not an unprimeable number, because it can be changed into a prime (51731032207) 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, 15187 + ... + 322013.

It is an arithmetic number, because the mean of its divisors is an integer number (1676431485).

Almost surely, 2^51731032200 is an apocalyptic number.

51731032200 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 51731032200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80468711280).

51731032200 is an abundant number, since it is smaller than the sum of its proper divisors (109206390360).

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

51731032200 is a wasteful number, since it uses less digits than its factorization.

51731032200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307127 (or 307118 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

Adding to 51731032200 its reverse (223013715), we get a palindrome (51954045915).

The spelling of 51731032200 in words is "fifty-one billion, seven hundred thirty-one million, thirty-two thousand, two hundred".