502021601 has 4 divisors (see below), whose sum is σ = 504570132. Its totient is φ = 499473072.

The previous prime is 502021573. The next prime is 502021631. The reversal of 502021601 is 106120205.

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 448380625 + 53640976 = 21175^2 + 7324^2 .

It is a cyclic number.

It is not a de Polignac number, because 502021601 - 2¹⁰ = 502020577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 502021601.

It is not an unprimeable number, because it can be changed into a prime (502021631) 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, 1273970 + ... + 1274363.

It is an arithmetic number, because the mean of its divisors is an integer number (126142533).

Almost surely, 2^502021601 is an apocalyptic number.

It is an amenable number.

502021601 is a deficient number, since it is larger than the sum of its proper divisors (2548531).

502021601 is a wasteful number, since it uses less digits than its factorization.

502021601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548530.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 502021601 is about 22405.8385471287. The cubic root of 502021601 is about 794.7687847311.

Adding to 502021601 its reverse (106120205), we get a palindrome (608141806).

The spelling of 502021601 in words is "five hundred two million, twenty-one thousand, six hundred one".