55538113 has 4 divisors (see below), whose sum is σ = 55776708. Its totient is φ = 55299520.

The previous prime is 55538101. The next prime is 55538129. The reversal of 55538113 is 31183555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34304449 + 21233664 = 5857^2 + 4608^2 .

It is a cyclic number.

It is not a de Polignac number, because 55538113 - 2¹³ = 55529921 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55538213) 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, 118948 + ... + 119413.

It is an arithmetic number, because the mean of its divisors is an integer number (13944177).

Almost surely, 2^55538113 is an apocalyptic number.

It is an amenable number.

55538113 is a deficient number, since it is larger than the sum of its proper divisors (238595).

55538113 is a wasteful number, since it uses less digits than its factorization.

55538113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238594.

The product of its digits is 9000, while the sum is 31.

The square root of 55538113 is about 7452.3897509457. The cubic root of 55538113 is about 381.5314765209.

The spelling of 55538113 in words is "fifty-five million, five hundred thirty-eight thousand, one hundred thirteen".