54172789 has 12 divisors (see below), whose sum is σ = 60370828. Its totient is φ = 48565440.

The previous prime is 54172771. The next prime is 54172801. The reversal of 54172789 is 98727145.

It can be written as a sum of positive squares in 2 ways, for example, as 43996689 + 10176100 = 6633^2 + 3190^2 .

It is not a de Polignac number, because 54172789 - 2⁹ = 54172277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54172189) 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, 5767 + ... + 11899.

Almost surely, 2^54172789 is an apocalyptic number.

It is an amenable number.

54172789 is a deficient number, since it is larger than the sum of its proper divisors (6198039).

54172789 is a wasteful number, since it uses less digits than its factorization.

54172789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6228 (or 6217 counting only the distinct ones).

The product of its digits is 141120, while the sum is 43.

The square root of 54172789 is about 7360.2166408333. The cubic root of 54172789 is about 378.3790348038.

The spelling of 54172789 in words is "fifty-four million, one hundred seventy-two thousand, seven hundred eighty-nine".