55113109 has 2 divisors, whose sum is σ = 55113110. Its totient is φ = 55113108.

The previous prime is 55113089. The next prime is 55113119. The reversal of 55113109 is 90131155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30580900 + 24532209 = 5530^2 + 4953^2 .

It is a cyclic number.

It is not a de Polignac number, because 55113109 - 2¹⁵ = 55080341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55113119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27556554 + 27556555.

It is an arithmetic number, because the mean of its divisors is an integer number (27556555).

Almost surely, 2^55113109 is an apocalyptic number.

It is an amenable number.

55113109 is a deficient number, since it is larger than the sum of its proper divisors (1).

55113109 is an equidigital number, since it uses as much as digits as its factorization.

55113109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 675, while the sum is 25.

The square root of 55113109 is about 7423.8203776762. The cubic root of 55113109 is about 380.5557634191. Note that the first 3 decimals are identical.

The spelling of 55113109 in words is "fifty-five million, one hundred thirteen thousand, one hundred nine".