54999999 has 8 divisors (see below), whose sum is σ = 81481520. Its totient is φ = 36666648.

The previous prime is 54999943. The next prime is 55000013. The reversal of 54999999 is 99999945.

It is not a de Polignac number, because 54999999 - 2²⁰ = 53951423 is a prime.

It is a Duffinian number.

54999999 is a modest number, since divided by 9999 gives 5499 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54999929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1018492 + ... + 1018545.

It is an arithmetic number, because the mean of its divisors is an integer number (10185190).

Almost surely, 2^54999999 is an apocalyptic number.

54999999 is a deficient number, since it is larger than the sum of its proper divisors (26481521).

54999999 is a wasteful number, since it uses less digits than its factorization.

54999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037046 (or 2037040 counting only the distinct ones).

The product of its digits is 10628820, while the sum is 63.

The square root of 54999999 is about 7416.1984196757. The cubic root of 54999999 is about 380.2952437713.

The spelling of 54999999 in words is "fifty-four million, nine hundred ninety-nine thousand, nine hundred ninety-nine".