55555549983 has 6 divisors (see below), whose sum is σ = 80246905544. Its totient is φ = 37037033316.

The previous prime is 55555549949. The next prime is 55555549991. The reversal of 55555549983 is 38994555555.

55555549983 is a `hidden beast` number, since 5 + 5 + 5 + 5 + 5 + 549 + 9 + 83 = 666.

It is not a de Polignac number, because 55555549983 - 2¹⁶ = 55555484447 is a prime.

It is a super-2 number, since 2×55555549983² (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 55555549983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55555549183) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3086419435 + ... + 3086419452.

Almost surely, 2^55555549983 is an apocalyptic number.

55555549983 is a deficient number, since it is larger than the sum of its proper divisors (24691355561).

55555549983 is a wasteful number, since it uses less digits than its factorization.

55555549983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6172838893 (or 6172838890 counting only the distinct ones).

The product of its digits is 121500000, while the sum is 63.

The spelling of 55555549983 in words is "fifty-five billion, five hundred fifty-five million, five hundred forty-nine thousand, nine hundred eighty-three".