2156075 has 6 divisors (see below), whose sum is σ = 2673564. Its totient is φ = 1724840.

The previous prime is 2156071. The next prime is 2156083. The reversal of 2156075 is 5706512.

It is not a de Polignac number, because 2156075 - 2² = 2156071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2156071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43097 + ... + 43146.

It is an arithmetic number, because the mean of its divisors is an integer number (445594).

2^2156075 is an apocalyptic number.

2156075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2156075 is a deficient number, since it is larger than the sum of its proper divisors (517489).

2156075 is an equidigital number, since it uses as much as digits as its factorization.

2156075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86253 (or 86248 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 2156075 is about 1468.3579263926. The cubic root of 2156075 is about 129.1877361861.

The spelling of 2156075 in words is "two million, one hundred fifty-six thousand, seventy-five".