4520520 has 96 divisors (see below), whose sum is σ = 15233400. Its totient is φ = 1161216.

The previous prime is 4520519. The next prime is 4520531. The reversal of 4520520 is 250254.

It can be written as a sum of positive squares in 4 ways, for example, as 2762244 + 1758276 = 1662^2 + 1326^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 4520493 and 4520502.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10224 + ... + 10656.

Almost surely, 2^4520520 is an apocalyptic number.

4520520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4520520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7616700).

4520520 is an abundant number, since it is smaller than the sum of its proper divisors (10712880).

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

4520520 is a wasteful number, since it uses less digits than its factorization.

4520520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 4520520 is about 2126.1514527427. The cubic root of 4520520 is about 165.3469284404.

Adding to 4520520 its reverse (250254), we get a palindrome (4770774).

The spelling of 4520520 in words is "four million, five hundred twenty thousand, five hundred twenty".