501898241 has 4 divisors (see below), whose sum is σ = 540505812. Its totient is φ = 463290672.

The previous prime is 501898231. The next prime is 501898283. The reversal of 501898241 is 142898105.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 284630641 + 217267600 = 16871^2 + 14740^2 .

It is a de Polignac number, because none of the positive numbers 2^k-501898241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 501898195 and 501898204.

It is not an unprimeable number, because it can be changed into a prime (501898231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19303766 + ... + 19303791.

It is an arithmetic number, because the mean of its divisors is an integer number (135126453).

Almost surely, 2^501898241 is an apocalyptic number.

It is an amenable number.

501898241 is a deficient number, since it is larger than the sum of its proper divisors (38607571).

501898241 is a wasteful number, since it uses less digits than its factorization.

501898241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38607570.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 501898241 is about 22403.0855240969. The cubic root of 501898241 is about 794.7036808201.

The spelling of 501898241 in words is "five hundred one million, eight hundred ninety-eight thousand, two hundred forty-one".