545423545 has 4 divisors (see below), whose sum is σ = 654508260. Its totient is φ = 436338832.

The previous prime is 545423539. The next prime is 545423551. The reversal of 545423545 is 545324545.

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

It is an interprime number because it is at equal distance from previous prime (545423539) and next prime (545423551).

It can be written as a sum of positive squares in 2 ways, for example, as 104591529 + 440832016 = 10227^2 + 20996^2 .

It is a cyclic number.

It is not a de Polignac number, because 545423545 - 2³ = 545423537 is a prime.

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, 54542350 + ... + 54542359.

It is an arithmetic number, because the mean of its divisors is an integer number (163627065).

Almost surely, 2^545423545 is an apocalyptic number.

It is an amenable number.

545423545 is a deficient number, since it is larger than the sum of its proper divisors (109084715).

545423545 is a wasteful number, since it uses less digits than its factorization.

545423545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109084714.

The product of its digits is 240000, while the sum is 37.

The square root of 545423545 is about 23354.3046353344. The cubic root of 545423545 is about 817.0424614143.

The spelling of 545423545 in words is "five hundred forty-five million, four hundred twenty-three thousand, five hundred forty-five".