501798001 has 2 divisors, whose sum is σ = 501798002. Its totient is φ = 501798000.

The previous prime is 501797977. The next prime is 501798013. The reversal of 501798001 is 100897105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440958001 + 60840000 = 20999^2 + 7800^2 .

It is a cyclic number.

It is not a de Polignac number, because 501798001 - 2¹⁷ = 501666929 is a prime.

It is not a weakly prime, because it can be changed into another prime (501798701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250899000 + 250899001.

It is an arithmetic number, because the mean of its divisors is an integer number (250899001).

Almost surely, 2^501798001 is an apocalyptic number.

It is an amenable number.

501798001 is a deficient number, since it is larger than the sum of its proper divisors (1).

501798001 is an equidigital number, since it uses as much as digits as its factorization.

501798001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 501798001 is about 22400.8482205474. The cubic root of 501798001 is about 794.6507707583.

The spelling of 501798001 in words is "five hundred one million, seven hundred ninety-eight thousand, one".