2153551165 has 8 divisors (see below), whose sum is σ = 2673374040. Its totient is φ = 1663432512.

The previous prime is 2153551163. The next prime is 2153551201. The reversal of 2153551165 is 5611553512.

It can be written as a sum of positive squares in 4 ways, for example, as 3003289 + 2150547876 = 1733^2 + 46374^2 .

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 2153551165 - 2¹ = 2153551163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2153551165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153551163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7425894 + ... + 7426183.

It is an arithmetic number, because the mean of its divisors is an integer number (334171755).

Almost surely, 2^2153551165 is an apocalyptic number.

It is an amenable number.

2153551165 is a deficient number, since it is larger than the sum of its proper divisors (519822875).

2153551165 is a wasteful number, since it uses less digits than its factorization.

2153551165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14852111.

The product of its digits is 22500, while the sum is 34.

The square root of 2153551165 is about 46406.3698752660. The cubic root of 2153551165 is about 1291.3730877610.

The spelling of 2153551165 in words is "two billion, one hundred fifty-three million, five hundred fifty-one thousand, one hundred sixty-five".