51290501 has 2 divisors, whose sum is σ = 51290502. Its totient is φ = 51290500.

The previous prime is 51290453. The next prime is 51290507. The reversal of 51290501 is 10509215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45292900 + 5997601 = 6730^2 + 2449^2 .

It is a cyclic number.

It is not a de Polignac number, because 51290501 - 2²² = 47096197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51290507) 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, 25645250 + 25645251.

It is an arithmetic number, because the mean of its divisors is an integer number (25645251).

Almost surely, 2^51290501 is an apocalyptic number.

It is an amenable number.

51290501 is a deficient number, since it is larger than the sum of its proper divisors (1).

51290501 is an equidigital number, since it uses as much as digits as its factorization.

51290501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 51290501 is about 7161.7386855428. The cubic root of 51290501 is about 371.5457635483.

Adding to 51290501 its reverse (10509215), we get a palindrome (61799716).

The spelling of 51290501 in words is "fifty-one million, two hundred ninety thousand, five hundred one".