55543313 has 6 divisors (see below), whose sum is σ = 64611666. Its totient is φ = 47608512.

The previous prime is 55543297. The next prime is 55543333. The reversal of 55543313 is 31334555.

It can be written as a sum of positive squares in only one way, i.e., 34904464 + 20638849 = 5908^2 + 4543^2 .

It is not a de Polignac number, because 55543313 - 2⁴ = 55543297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55543333) 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, 566720 + ... + 566817.

It is an arithmetic number, because the mean of its divisors is an integer number (10768611).

Almost surely, 2^55543313 is an apocalyptic number.

It is an amenable number.

55543313 is a deficient number, since it is larger than the sum of its proper divisors (9068353).

55543313 is a wasteful number, since it uses less digits than its factorization.

55543313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133551 (or 1133544 counting only the distinct ones).

The product of its digits is 13500, while the sum is 29.

The square root of 55543313 is about 7452.7386241569. The cubic root of 55543313 is about 381.5433836699.

Adding to 55543313 its reverse (31334555), we get a palindrome (86877868).

The spelling of 55543313 in words is "fifty-five million, five hundred forty-three thousand, three hundred thirteen".