2013105551 has 4 divisors (see below), whose sum is σ = 2055937632. Its totient is φ = 1970273472.

The previous prime is 2013105539. The next prime is 2013105593. The reversal of 2013105551 is 1555013102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2013105551 - 2⁶ = 2013105487 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 (2012105551) 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, 21415970 + ... + 21416063.

It is an arithmetic number, because the mean of its divisors is an integer number (513984408).

Almost surely, 2^2013105551 is an apocalyptic number.

2013105551 is a deficient number, since it is larger than the sum of its proper divisors (42832081).

2013105551 is an equidigital number, since it uses as much as digits as its factorization.

2013105551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42832080.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 2013105551 is about 44867.6448122698. The cubic root of 2013105551 is about 1262.6670538805.

Adding to 2013105551 its reverse (1555013102), we get a palindrome (3568118653).

The spelling of 2013105551 in words is "two billion, thirteen million, one hundred five thousand, five hundred fifty-one".