55113513 has 16 divisors (see below), whose sum is σ = 90443136. Its totient is φ = 29070720.

The previous prime is 55113449. The next prime is 55113523. The reversal of 55113513 is 31531155.

It is not a de Polignac number, because 55113513 - 2⁶ = 55113449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55113523) 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, 100668 + ... + 101213.

It is an arithmetic number, because the mean of its divisors is an integer number (5652696).

Almost surely, 2^55113513 is an apocalyptic number.

It is an amenable number.

55113513 is a deficient number, since it is larger than the sum of its proper divisors (35329623).

55113513 is a wasteful number, since it uses less digits than its factorization.

55113513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201904.

The product of its digits is 1125, while the sum is 24.

The square root of 55113513 is about 7423.8475873364. The cubic root of 55113513 is about 380.5566932895.

Adding to 55113513 its reverse (31531155), we get a palindrome (86644668).

The spelling of 55113513 in words is "fifty-five million, one hundred thirteen thousand, five hundred thirteen".