545421744 has 180 divisors, whose sum is σ = 1880497944. Its totient is φ = 146635776.

The previous prime is 545421743. The next prime is 545421749. The reversal of 545421744 is 447124545.

545421744 is a `hidden beast` number, since 545 + 42 + 1 + 74 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 545421699 and 545421708.

It is not an unprimeable number, because it can be changed into a prime (545421743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 117679 + ... + 122225.

Almost surely, 2^545421744 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 545421744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (940248972).

545421744 is an abundant number, since it is smaller than the sum of its proper divisors (1335076200).

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

545421744 is a wasteful number, since it uses less digits than its factorization.

545421744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4592 (or 4576 counting only the distinct ones).

The product of its digits is 89600, while the sum is 36.

The square root of 545421744 is about 23354.2660771003. The cubic root of 545421744 is about 817.0415621162.

The spelling of 545421744 in words is "five hundred forty-five million, four hundred twenty-one thousand, seven hundred forty-four".