54117865 has 16 divisors (see below), whose sum is σ = 68257728. Its totient is φ = 41138496.

The previous prime is 54117839. The next prime is 54117881. The reversal of 54117865 is 56871145.

It is a cyclic number.

It is not a de Polignac number, because 54117865 - 2⁹ = 54117353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4554 + ... + 11356.

It is an arithmetic number, because the mean of its divisors is an integer number (4266108).

Almost surely, 2^54117865 is an apocalyptic number.

It is an amenable number.

54117865 is a deficient number, since it is larger than the sum of its proper divisors (14139863).

54117865 is a wasteful number, since it uses less digits than its factorization.

54117865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6888.

The product of its digits is 33600, while the sum is 37.

The square root of 54117865 is about 7356.4845544594. The cubic root of 54117865 is about 378.2511162315.

The spelling of 54117865 in words is "fifty-four million, one hundred seventeen thousand, eight hundred sixty-five".