54561109 has 16 divisors (see below), whose sum is σ = 59780160. Its totient is φ = 49593600.

The previous prime is 54561097. The next prime is 54561121. The reversal of 54561109 is 90116545.

It is an interprime number because it is at equal distance from previous prime (54561097) and next prime (54561121).

It is a cyclic number.

It is not a de Polignac number, because 54561109 - 2¹³ = 54552917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54561139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73462 + ... + 74200.

It is an arithmetic number, because the mean of its divisors is an integer number (3736260).

Almost surely, 2^54561109 is an apocalyptic number.

It is an amenable number.

54561109 is a deficient number, since it is larger than the sum of its proper divisors (5219051).

54561109 is a wasteful number, since it uses less digits than its factorization.

54561109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 54561109 is about 7386.5491943126. The cubic root of 54561109 is about 379.2809787659.

The spelling of 54561109 in words is "fifty-four million, five hundred sixty-one thousand, one hundred nine".