520540022 has 4 divisors (see below), whose sum is σ = 780810036. Its totient is φ = 260270010.

The previous prime is 520540019. The next prime is 520540049. The reversal of 520540022 is 220045025.

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

It is a junction number, because it is equal to n+sod(n) for n = 520539976 and 520540003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130135004 + ... + 130135007.

It is an arithmetic number, because the mean of its divisors is an integer number (195202509).

Almost surely, 2^520540022 is an apocalyptic number.

520540022 is a deficient number, since it is larger than the sum of its proper divisors (260270014).

520540022 is a wasteful number, since it uses less digits than its factorization.

520540022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260270013.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 520540022 is about 22815.3461950504. The cubic root of 520540022 is about 804.4234246885.

Adding to 520540022 its reverse (220045025), we get a palindrome (740585047).

The spelling of 520540022 in words is "five hundred twenty million, five hundred forty thousand, twenty-two".