545656544 has 48 divisors (see below), whose sum is σ = 1127831040. Its totient is φ = 259524480.

The previous prime is 545656543. The next prime is 545656549. The reversal of 545656544 is 445656545.

It is a junction number, because it is equal to n+sod(n) for n = 545656495 and 545656504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545656543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53867 + ... + 63189.

It is an arithmetic number, because the mean of its divisors is an integer number (23496480).

Almost surely, 2^545656544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545656544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (563915520).

545656544 is an abundant number, since it is smaller than the sum of its proper divisors (582174496).

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

545656544 is a wasteful number, since it uses less digits than its factorization.

545656544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9423 (or 9415 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 44.

The square root of 545656544 is about 23359.2924550381. The cubic root of 545656544 is about 817.1587887325.

Subtracting from 545656544 its reverse (445656545), we obtain a palindrome (99999999).

The spelling of 545656544 in words is "five hundred forty-five million, six hundred fifty-six thousand, five hundred forty-four".