54781646 has 8 divisors (see below), whose sum is σ = 82940760. Its totient is φ = 27134728.

The previous prime is 54781621. The next prime is 54781669. The reversal of 54781646 is 64618745.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127781 + ... + 128208.

It is an arithmetic number, because the mean of its divisors is an integer number (10367595).

Almost surely, 2^54781646 is an apocalyptic number.

54781646 is a deficient number, since it is larger than the sum of its proper divisors (28159114).

54781646 is a wasteful number, since it uses less digits than its factorization.

54781646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256098.

The product of its digits is 161280, while the sum is 41.

The square root of 54781646 is about 7401.4624230621. The cubic root of 54781646 is about 379.7913120067.

The spelling of 54781646 in words is "fifty-four million, seven hundred eighty-one thousand, six hundred forty-six".