55083997813 has 8 divisors (see below), whose sum is σ = 59323862808. Its totient is φ = 50844509184.

The previous prime is 55083997799. The next prime is 55083997819. The reversal of 55083997813 is 31879938055.

55083997813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1545905124 + 53538092689 = 39318^2 + 231383^2 .

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 55083997813 - 2²¹ = 55081900661 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 (55083997819) 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, 258981 + ... + 420997.

It is an arithmetic number, because the mean of its divisors is an integer number (7415482851).

Almost surely, 2^55083997813 is an apocalyptic number.

It is an amenable number.

55083997813 is a deficient number, since it is larger than the sum of its proper divisors (4239864995).

55083997813 is a wasteful number, since it uses less digits than its factorization.

55083997813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188183.

The product of its (nonzero) digits is 8164800, while the sum is 58.

The spelling of 55083997813 in words is "fifty-five billion, eighty-three million, nine hundred ninety-seven thousand, eight hundred thirteen".