51363503 has 2 divisors, whose sum is σ = 51363504. Its totient is φ = 51363502.

The previous prime is 51363491. The next prime is 51363523. The reversal of 51363503 is 30536315.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51363503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51363523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25681751 + 25681752.

It is an arithmetic number, because the mean of its divisors is an integer number (25681752).

Almost surely, 2^51363503 is an apocalyptic number.

51363503 is a deficient number, since it is larger than the sum of its proper divisors (1).

51363503 is an equidigital number, since it uses as much as digits as its factorization.

51363503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 26.

The square root of 51363503 is about 7166.8335406928. The cubic root of 51363503 is about 371.7219542340.

Adding to 51363503 its reverse (30536315), we get a palindrome (81899818).

The spelling of 51363503 in words is "fifty-one million, three hundred sixty-three thousand, five hundred three".