51006100 has 18 divisors (see below), whose sum is σ = 110683454. Its totient is φ = 20402400.

The previous prime is 51006079. The next prime is 51006143. The reversal of 51006100 is 160015.

It can be written as a sum of positive squares in 3 ways, for example, as 4056196 + 46949904 = 2014^2 + 6852^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 254931 + ... + 255130.

Almost surely, 2^51006100 is an apocalyptic number.

51006100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51006100 is an abundant number, since it is smaller than the sum of its proper divisors (59677354).

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

51006100 is a wasteful number, since it uses less digits than its factorization.

51006100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510075 (or 510068 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 51006100 is about 7141.8555011986. The cubic root of 51006100 is about 370.8577615801.

Adding to 51006100 its reverse (160015), we get a palindrome (51166115).

The spelling of 51006100 in words is "fifty-one million, six thousand, one hundred".