51000033 has 12 divisors (see below), whose sum is σ = 79102320. Its totient is φ = 29142792.

The previous prime is 50999999. The next prime is 51000041. The reversal of 51000033 is 33000015.

It is a happy number.

It is not a de Polignac number, because 51000033 - 2¹³ = 50991841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50999982 and 51000018.

It is not an unprimeable number, because it can be changed into a prime (51000083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173323 + ... + 173616.

It is an arithmetic number, because the mean of its divisors is an integer number (6591860).

Almost surely, 2^51000033 is an apocalyptic number.

It is an amenable number.

51000033 is a deficient number, since it is larger than the sum of its proper divisors (28102287).

51000033 is a wasteful number, since it uses less digits than its factorization.

51000033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346956 (or 346949 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 12.

The square root of 51000033 is about 7141.4307390046. The cubic root of 51000033 is about 370.8430569123.

Adding to 51000033 its reverse (33000015), we get a palindrome (84000048).

The spelling of 51000033 in words is "fifty-one million, thirty-three", and thus it is an aban number and an uban number.