55260013 has 4 divisors (see below), whose sum is σ = 58510620. Its totient is φ = 52009408.

The previous prime is 55259977. The next prime is 55260017. The reversal of 55260013 is 31006255.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39917124 + 15342889 = 6318^2 + 3917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55260013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55260017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1625278 + ... + 1625311.

It is an arithmetic number, because the mean of its divisors is an integer number (14627655).

Almost surely, 2^55260013 is an apocalyptic number.

It is an amenable number.

55260013 is a deficient number, since it is larger than the sum of its proper divisors (3250607).

55260013 is a wasteful number, since it uses less digits than its factorization.

55260013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250606.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 55260013 is about 7433.7078904138. The cubic root of 55260013 is about 380.8935872543.

Adding to 55260013 its reverse (31006255), we get a palindrome (86266268).

The spelling of 55260013 in words is "fifty-five million, two hundred sixty thousand, thirteen".