51503083 has 2 divisors, whose sum is σ = 51503084. Its totient is φ = 51503082.

The previous prime is 51502999. The next prime is 51503087. The reversal of 51503083 is 38030515.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51503083 is a prime.

It is not a weakly prime, because it can be changed into another prime (51503087) 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 as a sum of consecutive naturals, namely, 25751541 + 25751542.

It is an arithmetic number, because the mean of its divisors is an integer number (25751542).

Almost surely, 2^51503083 is an apocalyptic number.

51503083 is a deficient number, since it is larger than the sum of its proper divisors (1).

51503083 is an equidigital number, since it uses as much as digits as its factorization.

51503083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 51503083 is about 7176.5648467773. The cubic root of 51503083 is about 372.0583670509.

Adding to 51503083 its reverse (38030515), we get a palindrome (89533598).

The spelling of 51503083 in words is "fifty-one million, five hundred three thousand, eighty-three".