54581818 has 16 divisors (see below), whose sum is σ = 84279744. Its totient is φ = 26500320.

The previous prime is 54581809. The next prime is 54581827. The reversal of 54581818 is 81818545.

It is an interprime number because it is at equal distance from previous prime (54581809) and next prime (54581827).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6646 + ... + 12382.

It is an arithmetic number, because the mean of its divisors is an integer number (5267484).

Almost surely, 2^54581818 is an apocalyptic number.

54581818 is a deficient number, since it is larger than the sum of its proper divisors (29697926).

54581818 is a wasteful number, since it uses less digits than its factorization.

54581818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5877.

The product of its digits is 51200, while the sum is 40.

The square root of 54581818 is about 7387.9508661062. The cubic root of 54581818 is about 379.3289588283.

The spelling of 54581818 in words is "fifty-four million, five hundred eighty-one thousand, eight hundred eighteen".