2155535213 has 8 divisors (see below), whose sum is σ = 2457895608. Its totient is φ = 1872681984.

The previous prime is 2155535203. The next prime is 2155535219. The reversal of 2155535213 is 3125355512.

It can be written as a sum of positive squares in 4 ways, for example, as 170119849 + 1985415364 = 13043^2 + 44558^2 .

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 2155535213 - 2⁸ = 2155534957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2155535213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155535219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4876556 + ... + 4876997.

It is an arithmetic number, because the mean of its divisors is an integer number (307236951).

Almost surely, 2^2155535213 is an apocalyptic number.

It is an amenable number.

2155535213 is a deficient number, since it is larger than the sum of its proper divisors (302360395).

2155535213 is a wasteful number, since it uses less digits than its factorization.

2155535213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9753583.

The product of its digits is 22500, while the sum is 32.

The square root of 2155535213 is about 46427.7418468743. The cubic root of 2155535213 is about 1291.7695429755.

The spelling of 2155535213 in words is "two billion, one hundred fifty-five million, five hundred thirty-five thousand, two hundred thirteen".