54219865 has 8 divisors (see below), whose sum is σ = 74358720. Its totient is φ = 37179312.

The previous prime is 54219859. The next prime is 54219871. The reversal of 54219865 is 56891245.

It is an interprime number because it is at equal distance from previous prime (54219859) and next prime (54219871).

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

It is a cyclic number.

It is not a de Polignac number, because 54219865 - 2⁹ = 54219353 is a prime.

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 774535 + ... + 774604.

It is an arithmetic number, because the mean of its divisors is an integer number (9294840).

Almost surely, 2^54219865 is an apocalyptic number.

It is an amenable number.

54219865 is a deficient number, since it is larger than the sum of its proper divisors (20138855).

54219865 is a wasteful number, since it uses less digits than its factorization.

54219865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549151.

The product of its digits is 86400, while the sum is 40.

The square root of 54219865 is about 7363.4139500642. The cubic root of 54219865 is about 378.4886065068.

The spelling of 54219865 in words is "fifty-four million, two hundred nineteen thousand, eight hundred sixty-five".