27552544525573 has 8 divisors (see below), whose sum is σ = 29193360429528. Its totient is φ = 25913959509504.

The previous prime is 27552544525553. The next prime is 27552544525579. The reversal of 27552544525573 is 37552544525572.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24339047305444 + 3213497220129 = 4933462^2 + 1792623^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27552544525573 - 2²¹ = 27552542428421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27552544525579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557696536 + ... + 557745937.

It is an arithmetic number, because the mean of its divisors is an integer number (3649170053691).

Almost surely, 2^{27552544525573} is an apocalyptic number.

It is an amenable number.

27552544525573 is a deficient number, since it is larger than the sum of its proper divisors (1640815903955).

27552544525573 is a wasteful number, since it uses less digits than its factorization.

27552544525573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115443943.

The product of its digits is 294000000, while the sum is 61.

Subtracting 27552544525573 from its reverse (37552544525572), we obtain a palindrome (9999999999999).

It can be divided in two parts, 2755254 and 4525573, that added together give a palindrome (7280827).

The spelling of 27552544525573 in words is "twenty-seven trillion, five hundred fifty-two billion, five hundred forty-four million, five hundred twenty-five thousand, five hundred seventy-three".