51045420100 has 54 divisors (see below), whose sum is σ = 114720066734. Its totient is φ = 19714060800.

The previous prime is 51045420089. The next prime is 51045420157. The reversal of 51045420100 is 102454015.

It can be written as a sum of positive squares in 9 ways, for example, as 12286835716 + 38758584384 = 110846^2 + 196872^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 219381 + ... + 387580.

Almost surely, 2^51045420100 is an apocalyptic number.

51045420100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51045420100 is an abundant number, since it is smaller than the sum of its proper divisors (63674646634).

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

51045420100 is a wasteful number, since it uses less digits than its factorization.

51045420100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607033 (or 606997 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 51045420100 its reverse (102454015), we get a palindrome (51147874115).

The spelling of 51045420100 in words is "fifty-one billion, forty-five million, four hundred twenty thousand, one hundred".