545259744 has 144 divisors (see below), whose sum is σ = 1614936960. Its totient is φ = 174320640.

The previous prime is 545259731. The next prime is 545259749. The reversal of 545259744 is 447952545.

545259744 is a `hidden beast` number, since 5 + 4 + 52 + 597 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a self number, because there is not a number n which added to its sum of digits gives 545259744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545259749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1401502 + ... + 1401890.

It is an arithmetic number, because the mean of its divisors is an integer number (11214840).

Almost surely, 2^545259744 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 545259744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (807468480).

545259744 is an abundant number, since it is smaller than the sum of its proper divisors (1069677216).

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

545259744 is a wasteful number, since it uses less digits than its factorization.

545259744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 582 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The square root of 545259744 is about 23350.7975024409. The cubic root of 545259744 is about 816.9606621269.

The spelling of 545259744 in words is "five hundred forty-five million, two hundred fifty-nine thousand, seven hundred forty-four".