2520161522 has 4 divisors (see below), whose sum is σ = 3780242286. Its totient is φ = 1260080760.

The previous prime is 2520161521. The next prime is 2520161531. The reversal of 2520161522 is 2251610252.

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

It can be written as a sum of positive squares in only one way, i.e., 1814674801 + 705486721 = 42599^2 + 26561^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2520161491 and 2520161500.

It is not an unprimeable number, because it can be changed into a prime (2520161521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630040379 + ... + 630040382.

Almost surely, 2^2520161522 is an apocalyptic number.

2520161522 is a deficient number, since it is larger than the sum of its proper divisors (1260080764).

2520161522 is a wasteful number, since it uses less digits than its factorization.

2520161522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260080763.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2520161522 is about 50201.2103638946. The cubic root of 2520161522 is about 1360.8474969231.

Adding to 2520161522 its reverse (2251610252), we get a palindrome (4771771774).

The spelling of 2520161522 in words is "two billion, five hundred twenty million, one hundred sixty-one thousand, five hundred twenty-two".