4545520 has 40 divisors (see below), whose sum is σ = 12079584. Its totient is φ = 1558272.

The previous prime is 4545509. The next prime is 4545521. The reversal of 4545520 is 255454.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4545521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3499 + ... + 4618.

Almost surely, 2^4545520 is an apocalyptic number.

4545520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4545520 is an abundant number, since it is smaller than the sum of its proper divisors (7534064).

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

4545520 is a wasteful number, since it uses less digits than its factorization.

4545520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8137 (or 8131 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 4545520 is about 2132.0225139524. The cubic root of 4545520 is about 165.6511763540.

The spelling of 4545520 in words is "four million, five hundred forty-five thousand, five hundred twenty".