51392503 has 2 divisors, whose sum is σ = 51392504. Its totient is φ = 51392502.

The previous prime is 51392489. The next prime is 51392507. The reversal of 51392503 is 30529315.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51392503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51392507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25696251 + 25696252.

It is an arithmetic number, because the mean of its divisors is an integer number (25696252).

Almost surely, 2^51392503 is an apocalyptic number.

51392503 is a deficient number, since it is larger than the sum of its proper divisors (1).

51392503 is an equidigital number, since it uses as much as digits as its factorization.

51392503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 51392503 is about 7168.8564638999. The cubic root of 51392503 is about 371.7918995446.

The spelling of 51392503 in words is "fifty-one million, three hundred ninety-two thousand, five hundred three".