2155536013 has 4 divisors (see below), whose sum is σ = 2160253180. Its totient is φ = 2150818848.

The previous prime is 2155535953. The next prime is 2155536017. The reversal of 2155536013 is 3106355512.

2155536013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1384807369 + 770728644 = 37213^2 + 27762^2 .

It is a cyclic number.

It is not a de Polignac number, because 2155536013 - 2¹³ = 2155527821 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 (2155536017) 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, 2357898 + ... + 2358811.

It is an arithmetic number, because the mean of its divisors is an integer number (540063295).

Almost surely, 2^2155536013 is an apocalyptic number.

It is an amenable number.

2155536013 is a deficient number, since it is larger than the sum of its proper divisors (4717167).

2155536013 is an equidigital number, since it uses as much as digits as its factorization.

2155536013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4717166.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 2155536013 is about 46427.7504624120. The cubic root of 2155536013 is about 1291.7697027835.

The spelling of 2155536013 in words is "two billion, one hundred fifty-five million, five hundred thirty-six thousand, thirteen".