55472181 has 8 divisors (see below), whose sum is σ = 75067104. Its totient is φ = 36429360.

The previous prime is 55472177. The next prime is 55472201. The reversal of 55472181 is 18127455.

55472181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55472181 - 2² = 55472177 is a prime.

It is a super-2 number, since 2×55472181² = 6154325729793522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55472161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137790 + ... + 138191.

It is an arithmetic number, because the mean of its divisors is an integer number (9383388).

Almost surely, 2^55472181 is an apocalyptic number.

It is an amenable number.

55472181 is a deficient number, since it is larger than the sum of its proper divisors (19594923).

55472181 is a wasteful number, since it uses less digits than its factorization.

55472181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276051.

The product of its digits is 11200, while the sum is 33.

The square root of 55472181 is about 7447.9648898206. The cubic root of 55472181 is about 381.3804385351.

The spelling of 55472181 in words is "fifty-five million, four hundred seventy-two thousand, one hundred eighty-one".