55271660 has 12 divisors (see below), whose sum is σ = 116070528. Its totient is φ = 22108656.

The previous prime is 55271647. The next prime is 55271677. The reversal of 55271660 is 6617255.

It is a happy number.

55271660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1381772 + ... + 1381811.

It is an arithmetic number, because the mean of its divisors is an integer number (9672544).

Almost surely, 2^55271660 is an apocalyptic number.

It is an amenable number.

55271660 is an abundant number, since it is smaller than the sum of its proper divisors (60798868).

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

55271660 is a wasteful number, since it uses less digits than its factorization.

55271660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763592 (or 2763590 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 55271660 is about 7434.4912401589. The cubic root of 55271660 is about 380.9203453368.

The spelling of 55271660 in words is "fifty-five million, two hundred seventy-one thousand, six hundred sixty".