55050031 has 4 divisors (see below), whose sum is σ = 55105600. Its totient is φ = 54994464.

The previous prime is 55050013. The next prime is 55050041. The reversal of 55050031 is 13005055.

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

It is a cyclic number.

It is not a de Polignac number, because 55050031 - 2²³ = 46661423 is a prime.

It is a super-3 number, since 3×55050031³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55049990 and 55050008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55050001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26271 + ... + 28288.

It is an arithmetic number, because the mean of its divisors is an integer number (13776400).

Almost surely, 2^55050031 is an apocalyptic number.

55050031 is a deficient number, since it is larger than the sum of its proper divisors (55569).

55050031 is a wasteful number, since it uses less digits than its factorization.

55050031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55568.

The product of its (nonzero) digits is 375, while the sum is 19.

The square root of 55050031 is about 7419.5708096897. The cubic root of 55050031 is about 380.4105235620.

Adding to 55050031 its reverse (13005055), we get a palindrome (68055086).

The spelling of 55050031 in words is "fifty-five million, fifty thousand, thirty-one".