54681109 has 6 divisors (see below), whose sum is σ = 63608694. Its totient is φ = 46869480.

The previous prime is 54681091. The next prime is 54681113. The reversal of 54681109 is 90118645.

It can be written as a sum of positive squares in only one way, i.e., 54538225 + 142884 = 7385^2 + 378^2 .

It is not a de Polignac number, because 54681109 - 2¹¹ = 54679061 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 (54681149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 557922 + ... + 558019.

It is an arithmetic number, because the mean of its divisors is an integer number (10601449).

Almost surely, 2^54681109 is an apocalyptic number.

It is an amenable number.

54681109 is a deficient number, since it is larger than the sum of its proper divisors (8927585).

54681109 is a wasteful number, since it uses less digits than its factorization.

54681109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115955 (or 1115948 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 54681109 is about 7394.6676057819. The cubic root of 54681109 is about 379.5588347445.

The spelling of 54681109 in words is "fifty-four million, six hundred eighty-one thousand, one hundred nine".