54117861 has 8 divisors (see below), whose sum is σ = 82465344. Its totient is φ = 30924480.

The previous prime is 54117839. The next prime is 54117881. The reversal of 54117861 is 16871145.

It is a happy number.

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

It is not a de Polignac number, because 54117861 - 2⁵ = 54117829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54117881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1288500 + ... + 1288541.

It is an arithmetic number, because the mean of its divisors is an integer number (10308168).

Almost surely, 2^54117861 is an apocalyptic number.

It is an amenable number.

54117861 is a deficient number, since it is larger than the sum of its proper divisors (28347483).

54117861 is a wasteful number, since it uses less digits than its factorization.

54117861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577051.

The product of its digits is 6720, while the sum is 33.

The square root of 54117861 is about 7356.4842825904. The cubic root of 54117861 is about 378.2511069123.

The spelling of 54117861 in words is "fifty-four million, one hundred seventeen thousand, eight hundred sixty-one".