51254543500 has 24 divisors (see below), whose sum is σ = 111939924096. Its totient is φ = 20501817200.

The previous prime is 51254543489. The next prime is 51254543551. The reversal of 51254543500 is 534545215.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51254044 + ... + 51255043.

It is an arithmetic number, because the mean of its divisors is an integer number (4664163504).

Almost surely, 2^51254543500 is an apocalyptic number.

51254543500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51254543500 is an abundant number, since it is smaller than the sum of its proper divisors (60685380596).

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

51254543500 is a wasteful number, since it uses less digits than its factorization.

51254543500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102509106 (or 102509094 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 51254543500 in words is "fifty-one billion, two hundred fifty-four million, five hundred forty-three thousand, five hundred".