54009071 has 4 divisors (see below), whose sum is σ = 54145512. Its totient is φ = 53872632.

The previous prime is 54009047. The next prime is 54009091. The reversal of 54009071 is 17090045.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54009071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54009071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54009031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67625 + ... + 68418.

It is an arithmetic number, because the mean of its divisors is an integer number (13536378).

Almost surely, 2^54009071 is an apocalyptic number.

54009071 is a deficient number, since it is larger than the sum of its proper divisors (136441).

54009071 is a wasteful number, since it uses less digits than its factorization.

54009071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136440.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 54009071 is about 7349.0864058058. The cubic root of 54009071 is about 377.9974781240.

The spelling of 54009071 in words is "fifty-four million, nine thousand, seventy-one".