55055131 has 4 divisors (see below), whose sum is σ = 55069992. Its totient is φ = 55040272.

The previous prime is 55055111. The next prime is 55055167. The reversal of 55055131 is 13155055.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55055131 - 2¹¹ = 55053083 is a prime.

It is a super-2 number, since 2×55055131² = 6062134898854322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55055096 and 55055105.

It is not an unprimeable number, because it can be changed into a prime (55055111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3135 + ... + 10951.

It is an arithmetic number, because the mean of its divisors is an integer number (13767498).

Almost surely, 2^55055131 is an apocalyptic number.

55055131 is a deficient number, since it is larger than the sum of its proper divisors (14861).

55055131 is an equidigital number, since it uses as much as digits as its factorization.

55055131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14860.

The product of its (nonzero) digits is 1875, while the sum is 25.

The square root of 55055131 is about 7419.9144873779. The cubic root of 55055131 is about 380.4222706566.

The spelling of 55055131 in words is "fifty-five million, fifty-five thousand, one hundred thirty-one".