2152755647 has 4 divisors (see below), whose sum is σ = 2460292176. Its totient is φ = 1845219120.

The previous prime is 2152755623. The next prime is 2152755659. The reversal of 2152755647 is 7465572512.

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 2152755647 - 2¹⁸ = 2152493503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2152755598 and 2152755607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152755607) 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, 153768254 + ... + 153768267.

It is an arithmetic number, because the mean of its divisors is an integer number (615073044).

Almost surely, 2^2152755647 is an apocalyptic number.

2152755647 is a deficient number, since it is larger than the sum of its proper divisors (307536529).

2152755647 is an equidigital number, since it uses as much as digits as its factorization.

2152755647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307536528.

The product of its digits is 588000, while the sum is 44.

The square root of 2152755647 is about 46397.7978680023. The cubic root of 2152755647 is about 1291.2140578644.

The spelling of 2152755647 in words is "two billion, one hundred fifty-two million, seven hundred fifty-five thousand, six hundred forty-seven".