55427740 has 24 divisors (see below), whose sum is σ = 117602352. Its totient is φ = 21941760.

The previous prime is 55427737. The next prime is 55427741. The reversal of 55427740 is 4772455.

55427740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 55427696 and 55427705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55427741) 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, 12346 + ... + 16225.

It is an arithmetic number, because the mean of its divisors is an integer number (4900098).

Almost surely, 2^55427740 is an apocalyptic number.

It is an amenable number.

55427740 is an abundant number, since it is smaller than the sum of its proper divisors (62174612).

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

55427740 is a wasteful number, since it uses less digits than its factorization.

55427740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28677 (or 28675 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 55427740 is about 7444.9808596127. The cubic root of 55427740 is about 381.2785649116.

The spelling of 55427740 in words is "fifty-five million, four hundred twenty-seven thousand, seven hundred forty".