51000050 has 12 divisors (see below), whose sum is σ = 94860186. Its totient is φ = 20400000.

The previous prime is 51000049. The next prime is 51000071. The reversal of 51000050 is 5000015.

It can be written as a sum of positive squares in 3 ways, for example, as 39904489 + 11095561 = 6317^2 + 3331^2 .

It is a hoax number, since the sum of its digits (11) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 50999995 and 51000040.

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, 509951 + ... + 510050.

Almost surely, 2^51000050 is an apocalyptic number.

51000050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51000050 is a deficient number, since it is larger than the sum of its proper divisors (43860136).

51000050 is a wasteful number, since it uses less digits than its factorization.

51000050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020013 (or 1020008 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 11.

The square root of 51000050 is about 7141.4319292422. The cubic root of 51000050 is about 370.8430981171.

Adding to 51000050 its reverse (5000015), we get a palindrome (56000065).

The spelling of 51000050 in words is "fifty-one million, fifty", and thus it is an aban number and an uban number.