2156275 has 12 divisors (see below), whose sum is σ = 2917224. Its totient is φ = 1568000.

The previous prime is 2156269. The next prime is 2156279. The reversal of 2156275 is 5726512.

It is not a de Polignac number, because 2156275 - 2¹¹ = 2154227 is a prime.

It is a Duffinian number.

2156275 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2156279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3646 + ... + 4195.

It is an arithmetic number, because the mean of its divisors is an integer number (243102).

2^2156275 is an apocalyptic number.

2156275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2156275 is a deficient number, since it is larger than the sum of its proper divisors (760949).

2156275 is a wasteful number, since it uses less digits than its factorization.

2156275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7862 (or 7857 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 2156275 is about 1468.4260280995. The cubic root of 2156275 is about 129.1917305969.

It can be divided in two parts, 2156 and 275, that multiplied together give a square (592900 = 770²).

The spelling of 2156275 in words is "two million, one hundred fifty-six thousand, two hundred seventy-five".