2155727835 has 24 divisors (see below), whose sum is σ = 3737863584. Its totient is φ = 1149331200.

The previous prime is 2155727813. The next prime is 2155727839. The reversal of 2155727835 is 5387275512.

2155727835 is a `hidden beast` number, since 2 + 1 + 5 + 572 + 78 + 3 + 5 = 666.

It is not a de Polignac number, because 2155727835 - 2²⁹ = 1618856923 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2155727839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167635 + ... + 180035.

It is an arithmetic number, because the mean of its divisors is an integer number (155744316).

Almost surely, 2^2155727835 is an apocalyptic number.

2155727835 is a deficient number, since it is larger than the sum of its proper divisors (1582135749).

2155727835 is a wasteful number, since it uses less digits than its factorization.

2155727835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16275 (or 16272 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The square root of 2155727835 is about 46429.8162283677. The cubic root of 2155727835 is about 1291.8080200120.

The spelling of 2155727835 in words is "two billion, one hundred fifty-five million, seven hundred twenty-seven thousand, eight hundred thirty-five".