51451251400 has 96 divisors (see below), whose sum is σ = 133327404000. Its totient is φ = 18350392320.

The previous prime is 51451251337. The next prime is 51451251491. The reversal of 51451251400 is 415215415.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 333630 + ... + 462829.

It is an arithmetic number, because the mean of its divisors is an integer number (1388827125).

Almost surely, 2^51451251400 is an apocalyptic number.

51451251400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51451251400 is an abundant number, since it is smaller than the sum of its proper divisors (81876152600).

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

51451251400 is a wasteful number, since it uses less digits than its factorization.

51451251400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796511 (or 796502 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 51451251400 its reverse (415215415), we get a palindrome (51866466815).

The spelling of 51451251400 in words is "fifty-one billion, four hundred fifty-one million, two hundred fifty-one thousand, four hundred".