55481367737 has 4 divisors (see below), whose sum is σ = 55609500660. Its totient is φ = 55353234816.

The previous prime is 55481367691. The next prime is 55481367743. The reversal of 55481367737 is 73776318455.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13033418896 + 42447948841 = 114164^2 + 206029^2 .

It is a cyclic number.

It is not a de Polignac number, because 55481367737 - 2⁶ = 55481367673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55481367937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64065812 + ... + 64066677.

It is an arithmetic number, because the mean of its divisors is an integer number (13902375165).

Almost surely, 2^55481367737 is an apocalyptic number.

It is an amenable number.

55481367737 is a deficient number, since it is larger than the sum of its proper divisors (128132923).

55481367737 is a wasteful number, since it uses less digits than its factorization.

55481367737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128132922.

The product of its digits is 14817600, while the sum is 56.

The spelling of 55481367737 in words is "fifty-five billion, four hundred eighty-one million, three hundred sixty-seven thousand, seven hundred thirty-seven".