55317513 has 8 divisors (see below), whose sum is σ = 73821888. Its totient is φ = 36845744.

The previous prime is 55317511. The next prime is 55317601. The reversal of 55317513 is 31571355.

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 55317513 - 2¹ = 55317511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55317511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3870 + ... + 11207.

It is an arithmetic number, because the mean of its divisors is an integer number (9227736).

Almost surely, 2^55317513 is an apocalyptic number.

It is an amenable number.

55317513 is a deficient number, since it is larger than the sum of its proper divisors (18504375).

55317513 is a wasteful number, since it uses less digits than its factorization.

55317513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16303.

The product of its digits is 7875, while the sum is 30.

The square root of 55317513 is about 7437.5744029892. The cubic root of 55317513 is about 381.0256525463.

Adding to 55317513 its reverse (31571355), we get a palindrome (86888868).

The spelling of 55317513 in words is "fifty-five million, three hundred seventeen thousand, five hundred thirteen".