51390303 has 32 divisors (see below), whose sum is σ = 76432896. Its totient is φ = 30547968.

The previous prime is 51390301. The next prime is 51390331. The reversal of 51390303 is 30309315.

51390303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51390303 - 2¹ = 51390301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51390301) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 226276 + ... + 226502.

It is an arithmetic number, because the mean of its divisors is an integer number (2388528).

Almost surely, 2^51390303 is an apocalyptic number.

51390303 is a deficient number, since it is larger than the sum of its proper divisors (25042593).

51390303 is a wasteful number, since it uses less digits than its factorization.

51390303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463.

The product of its (nonzero) digits is 1215, while the sum is 24.

The square root of 51390303 is about 7168.7030207702. The cubic root of 51390303 is about 371.7865942711.

Adding to 51390303 its reverse (30309315), we get a palindrome (81699618).

The spelling of 51390303 in words is "fifty-one million, three hundred ninety thousand, three hundred three".