54259645969 has 3 divisors (see below), whose sum is σ = 54259878907. Its totient is φ = 54259413032.

The previous prime is 54259645967. The next prime is 54259645987. The reversal of 54259645969 is 96954695245.

The square root of 54259645969 is 232937.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 96954695245 = 5 ⋅19390939049.

It can be written as a sum of positive squares in only one way, i.e., 14773187025 + 39486458944 = 121545^2 + 198712^2 .

It is not a de Polignac number, because 54259645969 - 2¹ = 54259645967 is a prime.

It is a super-2 number, since 2×54259645969² (a number of 22 digits) contains 22 as substring.

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 54259645969.

It is not an unprimeable number, because it can be changed into a prime (54259645967) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 116469 + ... + 349405.

Almost surely, 2^54259645969 is an apocalyptic number.

54259645969 is the 232937-th square number.

54259645969 is the 116469-th centered octagonal number.

It is an amenable number.

54259645969 is a deficient number, since it is larger than the sum of its proper divisors (232938).

54259645969 is an frugal number, since it uses more digits than its factorization.

54259645969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465874 (or 232937 counting only the distinct ones).

The product of its digits is 104976000, while the sum is 64.

Multiplying 54259645969 by its sum of digits (64), we get a square (3472617342016 = 1863496²).

The spelling of 54259645969 in words is "fifty-four billion, two hundred fifty-nine million, six hundred forty-five thousand, nine hundred sixty-nine".