54949454569 has 9 divisors (see below), whose sum is σ = 58376145477. Its totient is φ = 51713383104.

The previous prime is 54949454561. The next prime is 54949454611. The reversal of 54949454569 is 96545494945.

The square root of 54949454569 is 234413.

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

It can be written as a sum of positive squares in 4 ways, for example, as 34267563225 + 20681891344 = 185115^2 + 143812^2 .

It is not a de Polignac number, because 54949454569 - 2³ = 54949454561 is a prime.

It is a super-2 number, since 2×54949454569² (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

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 54949454569.

It is not an unprimeable number, because it can be changed into a prime (54949454561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3978127 + ... + 3991915.

Almost surely, 2^54949454569 is an apocalyptic number.

54949454569 is the 234413-rd square number.

54949454569 is the 117207-th centered octagonal number.

It is an amenable number.

54949454569 is a deficient number, since it is larger than the sum of its proper divisors (3426690908).

54949454569 is an frugal number, since it uses more digits than its factorization.

54949454569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27612 (or 13806 counting only the distinct ones).

The product of its digits is 139968000, while the sum is 64.

Multiplying 54949454569 by its sum of digits (64), we get a square (3516765092416 = 1875304²).

The spelling of 54949454569 in words is "fifty-four billion, nine hundred forty-nine million, four hundred fifty-four thousand, five hundred sixty-nine".