544653540 has 72 divisors (see below), whose sum is σ = 1667615040. Its totient is φ = 143878464.

The previous prime is 544653533. The next prime is 544653607. The reversal of 544653540 is 45356445.

544653540 is a `hidden beast` number, since 54 + 4 + 65 + 3 + 540 = 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 = 544653495 and 544653504.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5121 + ... + 33399.

It is an arithmetic number, because the mean of its divisors is an integer number (23161320).

Almost surely, 2^544653540 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 544653540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833807520).

544653540 is an abundant number, since it is smaller than the sum of its proper divisors (1122961500).

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

544653540 is a wasteful number, since it uses less digits than its factorization.

544653540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28401 (or 28396 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The square root of 544653540 is about 23337.8135222647. The cubic root of 544653540 is about 816.6577921198.

The spelling of 544653540 in words is "five hundred forty-four million, six hundred fifty-three thousand, five hundred forty".