501050801 has 2 divisors, whose sum is σ = 501050802. Its totient is φ = 501050800.

The previous prime is 501050783. The next prime is 501050821. The reversal of 501050801 is 108050105.

It is an a-pointer prime, because the next prime (501050821) can be obtained adding 501050801 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383219776 + 117831025 = 19576^2 + 10855^2 .

It is a cyclic number.

It is not a de Polignac number, because 501050801 - 2²² = 496856497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (501050821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250525400 + 250525401.

It is an arithmetic number, because the mean of its divisors is an integer number (250525401).

Almost surely, 2^501050801 is an apocalyptic number.

It is an amenable number.

501050801 is a deficient number, since it is larger than the sum of its proper divisors (1).

501050801 is an equidigital number, since it uses as much as digits as its factorization.

501050801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 501050801 is about 22384.1640674831. The cubic root of 501050801 is about 794.2561511357.

The spelling of 501050801 in words is "five hundred one million, fifty thousand, eight hundred one".