4809545 has 16 divisors (see below), whose sum is σ = 6322512. Its totient is φ = 3490560.

The previous prime is 4809509. The next prime is 4809547. The reversal of 4809545 is 5459084.

4809545 is nontrivially palindromic in base 2.

It can be written as a sum of positive squares in 8 ways, for example, as 2758921 + 2050624 = 1661^2 + 1432^2 .

It is not a de Polignac number, because 4809545 - 2⁸ = 4809289 is a prime.

It is a super-3 number, since 3×4809545³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4809547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3359 + ... + 4571.

It is an arithmetic number, because the mean of its divisors is an integer number (395157).

Almost surely, 2^4809545 is an apocalyptic number.

It is an amenable number.

4809545 is a deficient number, since it is larger than the sum of its proper divisors (1512967).

4809545 is a wasteful number, since it uses less digits than its factorization.

4809545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 4809545 is about 2193.0674864217. The cubic root of 4809545 is about 168.7982724268.

It can be divided in two parts, 4809 and 545, that multiplied together give a triangular number (2620905 = T₂₂₈₉).

The spelling of 4809545 in words is "four million, eight hundred nine thousand, five hundred forty-five".