54189816 has 16 divisors (see below), whose sum is σ = 135474600. Its totient is φ = 18063264.

The previous prime is 54189809. The next prime is 54189869. The reversal of 54189816 is 61898145.

It is a super-2 number, since 2×54189816² = 5873072316227712, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1128931 + ... + 1128978.

Almost surely, 2^54189816 is an apocalyptic number.

It is an amenable number.

54189816 is an abundant number, since it is smaller than the sum of its proper divisors (81284784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54189816 is a wasteful number, since it uses less digits than its factorization.

54189816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257918 (or 2257914 counting only the distinct ones).

The product of its digits is 69120, while the sum is 42.

The square root of 54189816 is about 7361.3732414543. The cubic root of 54189816 is about 378.4186733079.

The spelling of 54189816 in words is "fifty-four million, one hundred eighty-nine thousand, eight hundred sixteen".