55146072 has 32 divisors (see below), whose sum is σ = 138700800. Its totient is φ = 18270624.

The previous prime is 55146059. The next prime is 55146121. The reversal of 55146072 is 27064155.

55146072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2872 + ... + 10887.

It is an arithmetic number, because the mean of its divisors is an integer number (4334400).

Almost surely, 2^55146072 is an apocalyptic number.

It is an amenable number.

55146072 is an abundant number, since it is smaller than the sum of its proper divisors (83554728).

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

55146072 is a wasteful number, since it uses less digits than its factorization.

55146072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13935 (or 13931 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 55146072 is about 7426.0401291671. The cubic root of 55146072 is about 380.6316180859.

The spelling of 55146072 in words is "fifty-five million, one hundred forty-six thousand, seventy-two".