2155273 has 2 divisors, whose sum is σ = 2155274. Its totient is φ = 2155272.

The previous prime is 2155271. The next prime is 2155291. The reversal of 2155273 is 3725512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1617984 + 537289 = 1272^2 + 733^2 .

It is a cyclic number.

It is not a de Polignac number, because 2155273 - 2¹ = 2155271 is a prime.

Together with 2155271, it forms a pair of twin primes.

2155273 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2155271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077636 + 1077637.

It is an arithmetic number, because the mean of its divisors is an integer number (1077637).

2^2155273 is an apocalyptic number.

It is an amenable number.

2155273 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155273 is an equidigital number, since it uses as much as digits as its factorization.

2155273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2100, while the sum is 25.

The square root of 2155273 is about 1468.0848068146. The cubic root of 2155273 is about 129.1717161166.

The spelling of 2155273 in words is "two million, one hundred fifty-five thousand, two hundred seventy-three".