4540220524 has 12 divisors (see below), whose sum is σ = 9080441104. Its totient is φ = 1945808784.

The previous prime is 4540220519. The next prime is 4540220527. The reversal of 4540220524 is 4250220454.

4540220524 is an admirable number.

It is a super-2 number, since 2×4540220524² = 41227204813101669152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 162150733 = 4540220524 / (4 + 5 + 4 + 0 + 2 + 2 + 0 + 5 + 2 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 4540220492 and 4540220501.

It is not an unprimeable number, because it can be changed into a prime (4540220527) 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, 81075339 + ... + 81075394.

Almost surely, 2^4540220524 is an apocalyptic number.

It is an amenable number.

4540220524 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4540220524 is a wasteful number, since it uses less digits than its factorization.

4540220524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162150744 (or 162150742 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 4540220524 is about 67381.1585237298. The cubic root of 4540220524 is about 1655.8677552178.

Adding to 4540220524 its reverse (4250220454), we get a palindrome (8790440978).

The spelling of 4540220524 in words is "four billion, five hundred forty million, two hundred twenty thousand, five hundred twenty-four".