4545540 has 36 divisors (see below), whose sum is σ = 13788684. Its totient is φ = 1212096.

The previous prime is 4545521. The next prime is 4545551. The reversal of 4545540 is 455454.

4545540 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3218436 + 1327104 = 1794^2 + 1152^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12447 + ... + 12806.

It is an arithmetic number, because the mean of its divisors is an integer number (383019).

Almost surely, 2^4545540 is an apocalyptic number.

It is an amenable number.

4545540 is an abundant number, since it is smaller than the sum of its proper divisors (9243144).

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

4545540 is a wasteful number, since it uses less digits than its factorization.

4545540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25268 (or 25263 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 4545540 is about 2132.0272043293. The cubic root of 4545540 is about 165.6514193052.

It can be divided in two parts, 45 and 45540, that multiplied together give a triangular number (2049300 = T₂₀₂₄).

The spelling of 4545540 in words is "four million, five hundred forty-five thousand, five hundred forty".