55615313 has 8 divisors (see below), whose sum is σ = 63416808. Its totient is φ = 48317184.

The previous prime is 55615303. The next prime is 55615319. The reversal of 55615313 is 31351655.

55615313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8464 + 55606849 = 92^2 + 7457^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55615313 - 2⁶ = 55615249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55615319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125606 + ... + 126047.

It is an arithmetic number, because the mean of its divisors is an integer number (7927101).

Almost surely, 2^55615313 is an apocalyptic number.

It is an amenable number.

55615313 is a deficient number, since it is larger than the sum of its proper divisors (7801495).

55615313 is a wasteful number, since it uses less digits than its factorization.

55615313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251683.

The product of its digits is 6750, while the sum is 29.

The square root of 55615313 is about 7457.5674988564. The cubic root of 55615313 is about 381.7081755566.

Adding to 55615313 its reverse (31351655), we get a palindrome (86966968).

The spelling of 55615313 in words is "fifty-five million, six hundred fifteen thousand, three hundred thirteen".