51036990 has 16 divisors (see below), whose sum is σ = 122488848. Its totient is φ = 13609856.

The previous prime is 51036989. The next prime is 51037003. The reversal of 51036990 is 9963015.

51036990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 850587 + ... + 850646.

It is an arithmetic number, because the mean of its divisors is an integer number (7655553).

Almost surely, 2^51036990 is an apocalyptic number.

51036990 is an abundant number, since it is smaller than the sum of its proper divisors (71451858).

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

51036990 is a wasteful number, since it uses less digits than its factorization.

51036990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701243.

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 51036990 is about 7144.0177771335. The cubic root of 51036990 is about 370.9326120028.

The spelling of 51036990 in words is "fifty-one million, thirty-six thousand, nine hundred ninety".