54021655 has 16 divisors (see below), whose sum is σ = 68745600. Its totient is φ = 40638240.

The previous prime is 54021647. The next prime is 54021673. The reversal of 54021655 is 55612045.

54021655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54021655 - 2³ = 54021647 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 11160 + ... + 15250.

It is an arithmetic number, because the mean of its divisors is an integer number (4296600).

Almost surely, 2^54021655 is an apocalyptic number.

54021655 is a deficient number, since it is larger than the sum of its proper divisors (14723945).

54021655 is a wasteful number, since it uses less digits than its factorization.

54021655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4254.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 54021655 is about 7349.9425167820. The cubic root of 54021655 is about 378.0268333834.

The spelling of 54021655 in words is "fifty-four million, twenty-one thousand, six hundred fifty-five".