424545545 has 4 divisors (see below), whose sum is σ = 509454660. Its totient is φ = 339636432.

The previous prime is 424545487. The next prime is 424545547. The reversal of 424545545 is 545545424.

424545545 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 163916809 + 260628736 = 12803^2 + 16144^2 .

It is a cyclic number.

It is not a de Polignac number, because 424545545 - 2¹⁰ = 424544521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 424545499 and 424545508.

It is not an unprimeable number, because it can be changed into a prime (424545547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42454550 + ... + 42454559.

It is an arithmetic number, because the mean of its divisors is an integer number (127363665).

Almost surely, 2^424545545 is an apocalyptic number.

It is an amenable number.

424545545 is a deficient number, since it is larger than the sum of its proper divisors (84909115).

424545545 is an equidigital number, since it uses as much as digits as its factorization.

424545545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84909114.

The product of its digits is 320000, while the sum is 38.

The square root of 424545545 is about 20604.5030272511. The cubic root of 424545545 is about 751.5792176136.

The spelling of 424545545 in words is "four hundred twenty-four million, five hundred forty-five thousand, five hundred forty-five".