55102513 has 4 divisors (see below), whose sum is σ = 55119088. Its totient is φ = 55085940.

The previous prime is 55102511. The next prime is 55102543. The reversal of 55102513 is 31520155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55102513 - 2¹ = 55102511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55102511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1383 + ... + 10588.

It is an arithmetic number, because the mean of its divisors is an integer number (13779772).

Almost surely, 2^55102513 is an apocalyptic number.

It is an amenable number.

55102513 is a deficient number, since it is larger than the sum of its proper divisors (16575).

55102513 is a wasteful number, since it uses less digits than its factorization.

55102513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16574.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 55102513 is about 7423.1066946394. The cubic root of 55102513 is about 380.5313734122.

Adding to 55102513 its reverse (31520155), we get a palindrome (86622668).

The spelling of 55102513 in words is "fifty-five million, one hundred two thousand, five hundred thirteen".