54405009 has 12 divisors (see below), whose sum is σ = 79580800. Its totient is φ = 35810424.

The previous prime is 54405007. The next prime is 54405041. The reversal of 54405009 is 90050445.

It is not a de Polignac number, because 54405009 - 2¹ = 54405007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54405007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37549 + ... + 38970.

Almost surely, 2^54405009 is an apocalyptic number.

It is an amenable number.

54405009 is a deficient number, since it is larger than the sum of its proper divisors (25175791).

54405009 is a wasteful number, since it uses less digits than its factorization.

54405009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76604 (or 76601 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 54405009 is about 7375.9751219754. The cubic root of 54405009 is about 378.9189240924.

The spelling of 54405009 in words is "fifty-four million, four hundred five thousand, nine".