51534400 has 84 divisors (see below), whose sum is σ = 131023360. Its totient is φ = 19929600.

The previous prime is 51534367. The next prime is 51534407. The reversal of 51534400 is 443515.

It is not an unprimeable number, because it can be changed into a prime (51534407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49081 + ... + 50119.

Almost surely, 2^51534400 is an apocalyptic number.

51534400 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 51534400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65511680).

51534400 is an abundant number, since it is smaller than the sum of its proper divisors (79488960).

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

51534400 is a wasteful number, since it uses less digits than its factorization.

51534400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092 (or 1077 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 51534400 is about 7178.7464086705. The cubic root of 51534400 is about 372.1337631265.

Adding to 51534400 its reverse (443515), we get a palindrome (51977915).

The spelling of 51534400 in words is "fifty-one million, five hundred thirty-four thousand, four hundred".