2155267307 has 4 divisors (see below), whose sum is σ = 2165482056. Its totient is φ = 2145052560.

The previous prime is 2155267253. The next prime is 2155267333. The reversal of 2155267307 is 7037625512.

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 2155267307 - 2¹² = 2155263211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155267397) 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, 5107058 + ... + 5107479.

It is an arithmetic number, because the mean of its divisors is an integer number (541370514).

Almost surely, 2^2155267307 is an apocalyptic number.

2155267307 is a deficient number, since it is larger than the sum of its proper divisors (10214749).

2155267307 is a wasteful number, since it uses less digits than its factorization.

2155267307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10214748.

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 2155267307 is about 46424.8565641295. The cubic root of 2155267307 is about 1291.7160238390.

The spelling of 2155267307 in words is "two billion, one hundred fifty-five million, two hundred sixty-seven thousand, three hundred seven".