501121241 has 2 divisors, whose sum is σ = 501121242. Its totient is φ = 501121240.

The previous prime is 501121199. The next prime is 501121261. The reversal of 501121241 is 142121105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 460531600 + 40589641 = 21460^2 + 6371^2 .

It is a cyclic number.

It is not a de Polignac number, because 501121241 - 2⁶ = 501121177 is a prime.

It is a super-2 number, since 2×501121241² = 502244996362760162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (501121261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250560620 + 250560621.

It is an arithmetic number, because the mean of its divisors is an integer number (250560621).

Almost surely, 2^501121241 is an apocalyptic number.

It is an amenable number.

501121241 is a deficient number, since it is larger than the sum of its proper divisors (1).

501121241 is an equidigital number, since it uses as much as digits as its factorization.

501121241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 501121241 is about 22385.7374459722. The cubic root of 501121241 is about 794.2933694387.

Adding to 501121241 its reverse (142121105), we get a palindrome (643242346).

The spelling of 501121241 in words is "five hundred one million, one hundred twenty-one thousand, two hundred forty-one".