55180047 has 32 divisors (see below), whose sum is σ = 84268800. Its totient is φ = 31836672.

The previous prime is 55180033. The next prime is 55180057. The reversal of 55180047 is 74008155.

It is not a de Polignac number, because 55180047 - 2⁸ = 55179791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55179996 and 55180023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55180057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83404 + ... + 84062.

It is an arithmetic number, because the mean of its divisors is an integer number (2633400).

Almost surely, 2^55180047 is an apocalyptic number.

55180047 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

55180047 is a deficient number, since it is larger than the sum of its proper divisors (29088753).

55180047 is a wasteful number, since it uses less digits than its factorization.

55180047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 55180047 is about 7428.3273352754. The cubic root of 55180047 is about 380.7097699464.

The spelling of 55180047 in words is "fifty-five million, one hundred eighty thousand, forty-seven".