54490720259089 has 9 divisors (see below), whose sum is σ = 54637679841147. Its totient is φ = 54344154957624.

The previous prime is 54490720259077. The next prime is 54490720259137. The reversal of 54490720259089 is 98095202709445.

It is a happy number.

The square root of 54490720259089 is 7381783.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 38798759188225 + 15691961070864 = 6228865^2 + 3961308^2 .

It is not a de Polignac number, because 54490720259089 - 2²¹ = 54490718161937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54490720259089.

It is not an unprimeable number, because it can be changed into a prime (54490720859089) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2797686019 + ... + 2797705495.

It is an arithmetic number, because the mean of its divisors is an integer number (6070853315683).

Almost surely, 2^{54490720259089} is an apocalyptic number.

54490720259089 is the 7381783-rd square number.

54490720259089 is the 3690892-nd centered octagonal number.

It is an amenable number.

54490720259089 is a deficient number, since it is larger than the sum of its proper divisors (146959582058).

54490720259089 is an frugal number, since it uses more digits than its factorization.

54490720259089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39712 (or 19856 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 64.

The spelling of 54490720259089 in words is "fifty-four trillion, four hundred ninety billion, seven hundred twenty million, two hundred fifty-nine thousand, eighty-nine".