51240303 has 32 divisors (see below), whose sum is σ = 81100800. Its totient is φ = 31903200.

The previous prime is 51240253. The next prime is 51240307. The reversal of 51240303 is 30304215.

It is not a de Polignac number, because 51240303 - 2¹⁷ = 51109231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51240307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23218 + ... + 25328.

It is an arithmetic number, because the mean of its divisors is an integer number (2534400).

Almost surely, 2^51240303 is an apocalyptic number.

51240303 is a deficient number, since it is larger than the sum of its proper divisors (29860497).

51240303 is a wasteful number, since it uses less digits than its factorization.

51240303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180 (or 2174 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 51240303 is about 7158.2332317409. The cubic root of 51240303 is about 371.4245134031.

Adding to 51240303 its reverse (30304215), we get a palindrome (81544518).

The spelling of 51240303 in words is "fifty-one million, two hundred forty thousand, three hundred three".