51137803 has 2 divisors, whose sum is σ = 51137804. Its totient is φ = 51137802.

The previous prime is 51137791. The next prime is 51137831. The reversal of 51137803 is 30873115.

It is an a-pointer prime, because the next prime (51137831) can be obtained adding 51137803 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51137803 is a prime.

It is not a weakly prime, because it can be changed into another prime (51137893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25568901 + 25568902.

It is an arithmetic number, because the mean of its divisors is an integer number (25568902).

Almost surely, 2^51137803 is an apocalyptic number.

51137803 is a deficient number, since it is larger than the sum of its proper divisors (1).

51137803 is an equidigital number, since it uses as much as digits as its factorization.

51137803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 51137803 is about 7151.0700597883. The cubic root of 51137803 is about 371.1766848767.

The spelling of 51137803 in words is "fifty-one million, one hundred thirty-seven thousand, eight hundred three".