55257838849 has 8 divisors (see below), whose sum is σ = 56659049640. Its totient is φ = 53869910016.

The previous prime is 55257838843. The next prime is 55257838873. The reversal of 55257838849 is 94883875255.

It can be written as a sum of positive squares in 4 ways, for example, as 15997190400 + 39260648449 = 126480^2 + 198143^2 .

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 55257838849 - 2¹⁷ = 55257707777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55257838843) 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, 3312064 + ... + 3328705.

It is an arithmetic number, because the mean of its divisors is an integer number (7082381205).

Almost surely, 2^55257838849 is an apocalyptic number.

It is an amenable number.

55257838849 is a deficient number, since it is larger than the sum of its proper divisors (1401210791).

55257838849 is a wasteful number, since it uses less digits than its factorization.

55257838849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6640979.

The product of its digits is 96768000, while the sum is 64.

The spelling of 55257838849 in words is "fifty-five billion, two hundred fifty-seven million, eight hundred thirty-eight thousand, eight hundred forty-nine".