51202100 has 18 divisors (see below), whose sum is σ = 111108774. Its totient is φ = 20480800.

The previous prime is 51202097. The next prime is 51202159. The reversal of 51202100 is 120215.

It can be written as a sum of positive squares in 3 ways, for example, as 12588304 + 38613796 = 3548^2 + 6214^2 .

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, 255911 + ... + 256110.

Almost surely, 2^51202100 is an apocalyptic number.

51202100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51202100 is an abundant number, since it is smaller than the sum of its proper divisors (59906674).

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

51202100 is a wasteful number, since it uses less digits than its factorization.

51202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512035 (or 512028 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 51202100 is about 7155.5642684557. The cubic root of 51202100 is about 371.3321833574.

Adding to 51202100 its reverse (120215), we get a palindrome (51322315).

The spelling of 51202100 in words is "fifty-one million, two hundred two thousand, one hundred".