54569989 has 4 divisors (see below), whose sum is σ = 54726700. Its totient is φ = 54413280.

The previous prime is 54569941. The next prime is 54569993. The reversal of 54569989 is 98996545.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98996545 = 5 ⋅19799309.

It can be written as a sum of positive squares in 2 ways, for example, as 27217089 + 27352900 = 5217^2 + 5230^2 .

It is a cyclic number.

It is not a de Polignac number, because 54569989 - 2⁷ = 54569861 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 (54569089) 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, 77832 + ... + 78529.

It is an arithmetic number, because the mean of its divisors is an integer number (13681675).

Almost surely, 2^54569989 is an apocalyptic number.

It is an amenable number.

54569989 is a deficient number, since it is larger than the sum of its proper divisors (156711).

54569989 is a wasteful number, since it uses less digits than its factorization.

54569989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156710.

The product of its digits is 3499200, while the sum is 55.

The square root of 54569989 is about 7387.1502624490. The cubic root of 54569989 is about 379.3015540587.

The spelling of 54569989 in words is "fifty-four million, five hundred sixty-nine thousand, nine hundred eighty-nine".