4545040 has 20 divisors (see below), whose sum is σ = 10567404. Its totient is φ = 1817984.

The previous prime is 4545031. The next prime is 4545059. The reversal of 4545040 is 405454.

It can be written as a sum of positive squares in 2 ways, for example, as 3429904 + 1115136 = 1852^2 + 1056^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28327 + ... + 28486.

Almost surely, 2^4545040 is an apocalyptic number.

4545040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4545040 is an abundant number, since it is smaller than the sum of its proper divisors (6022364).

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

4545040 is a wasteful number, since it uses less digits than its factorization.

4545040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56826 (or 56820 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 4545040 is about 2131.9099418127. The cubic root of 4545040 is about 165.6453453113.

The spelling of 4545040 in words is "four million, five hundred forty-five thousand, forty".