54099999 has 6 divisors (see below), whose sum is σ = 78144456. Its totient is φ = 36066660.

The previous prime is 54099989. The next prime is 54100009. The reversal of 54099999 is 99999045.

It is a happy number.

54099999 is a `hidden beast` number, since 540 + 9 + 9 + 9 + 99 = 666.

It is an interprime number because it is at equal distance from previous prime (54099989) and next prime (54100009).

It is a de Polignac number, because none of the positive numbers 2^k-54099999 is a prime.

54099999 is a modest number, since divided by 9999 gives 5409 as remainder.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54099959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3005547 + ... + 3005564.

It is an arithmetic number, because the mean of its divisors is an integer number (13024076).

Almost surely, 2^54099999 is an apocalyptic number.

54099999 is a deficient number, since it is larger than the sum of its proper divisors (24044457).

54099999 is a wasteful number, since it uses less digits than its factorization.

54099999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6011117 (or 6011114 counting only the distinct ones).

The product of its (nonzero) digits is 1180980, while the sum is 54.

The square root of 54099999 is about 7355.2701513948. The cubic root of 54099999 is about 378.2094874752.

The spelling of 54099999 in words is "fifty-four million, ninety-nine thousand, nine hundred ninety-nine".