4565520 has 120 divisors (see below), whose sum is σ = 16277976. Its totient is φ = 1142784.

The previous prime is 4565501. The next prime is 4565543. The reversal of 4565520 is 255654.

4565520 is a `hidden beast` number, since 4 + 5 + 655 + 2 + 0 = 666.

4565520 is nontrivially palindromic in base 14.

It can be written as a sum of positive squares in 4 ways, for example, as 1016064 + 3549456 = 1008^2 + 1884^2 .

It is a tau number, because it is divible by the number of its divisors (120).

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, 12054 + ... + 12426.

Almost surely, 2^4565520 is an apocalyptic number.

4565520 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 4565520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8138988).

4565520 is an abundant number, since it is smaller than the sum of its proper divisors (11712456).

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

4565520 is a wasteful number, since it uses less digits than its factorization.

4565520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 4565520 is about 2136.7077479150. The cubic root of 4565520 is about 165.8937724588.

The spelling of 4565520 in words is "four million, five hundred sixty-five thousand, five hundred twenty".