51240200 has 48 divisors (see below), whose sum is σ = 129969360. Its totient is φ = 18632000.

The previous prime is 51240121. The next prime is 51240221. The reversal of 51240200 is 204215.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9446 + ... + 13845.

It is an arithmetic number, because the mean of its divisors is an integer number (2707695).

Almost surely, 2^51240200 is an apocalyptic number.

51240200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51240200 is an abundant number, since it is smaller than the sum of its proper divisors (78729160).

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

51240200 is a wasteful number, since it uses less digits than its factorization.

51240200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23318 (or 23309 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 51240200 is about 7158.2260372246. The cubic root of 51240200 is about 371.4242645316.

Adding to 51240200 its reverse (204215), we get a palindrome (51444415).

The spelling of 51240200 in words is "fifty-one million, two hundred forty thousand, two hundred".