2155307 has 16 divisors (see below), whose sum is σ = 2806272. Its totient is φ = 1605120.

The previous prime is 2155297. The next prime is 2155319. The reversal of 2155307 is 7035512.

It is not a de Polignac number, because 2155307 - 2⁴ = 2155291 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (2155327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1163 + ... + 2379.

It is an arithmetic number, because the mean of its divisors is an integer number (175392).

2^2155307 is an apocalyptic number.

2155307 is a deficient number, since it is larger than the sum of its proper divisors (650965).

2155307 is a wasteful number, since it uses less digits than its factorization.

2155307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 2155307 is about 1468.0963864815. The cubic root of 2155307 is about 129.1723953524.

The spelling of 2155307 in words is "two million, one hundred fifty-five thousand, three hundred seven".