55000340031 has 72 divisors (see below), whose sum is σ = 92616431760. Its totient is φ = 28934889984.

The previous prime is 55000340029. The next prime is 55000340077. The reversal of 55000340031 is 13004300055.

It is not a de Polignac number, because 55000340031 - 2¹ = 55000340029 is a prime.

It is a super-2 number, since 2×55000340031² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55000340011) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10158081 + ... + 10163493.

It is an arithmetic number, because the mean of its divisors is an integer number (1286339330).

Almost surely, 2^55000340031 is an apocalyptic number.

55000340031 is a deficient number, since it is larger than the sum of its proper divisors (37616091729).

55000340031 is a wasteful number, since it uses less digits than its factorization.

55000340031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5865 (or 5845 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

Adding to 55000340031 its reverse (13004300055), we get a palindrome (68004640086).

The spelling of 55000340031 in words is "fifty-five billion, three hundred forty thousand, thirty-one".