55671872 has 28 divisors (see below), whose sum is σ = 116974620. Its totient is φ = 26198016.

The previous prime is 55671871. The next prime is 55671893. The reversal of 55671872 is 27817655.

It can be written as a sum of positive squares in 2 ways, for example, as 21752896 + 33918976 = 4664^2 + 5824^2 .

It is not an unprimeable number, because it can be changed into a prime (55671871) 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, 24497 + ... + 26672.

It is an arithmetic number, because the mean of its divisors is an integer number (4177665).

Almost surely, 2^55671872 is an apocalyptic number.

It is an amenable number.

55671872 is an abundant number, since it is smaller than the sum of its proper divisors (61302748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55671872 is a wasteful number, since it uses less digits than its factorization.

55671872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51198 (or 51188 counting only the distinct ones).

The product of its digits is 117600, while the sum is 41.

The square root of 55671872 is about 7461.3585894259. The cubic root of 55671872 is about 381.8375267324.

The spelling of 55671872 in words is "fifty-five million, six hundred seventy-one thousand, eight hundred seventy-two".