2187355273 has 2 divisors, whose sum is σ = 2187355274. Its totient is φ = 2187355272.

The previous prime is 2187355253. The next prime is 2187355279. The reversal of 2187355273 is 3725537812.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2051002944 + 136352329 = 45288^2 + 11677^2 .

It is a cyclic number.

It is not a de Polignac number, because 2187355273 - 2⁵ = 2187355241 is a prime.

It is not a weakly prime, because it can be changed into another prime (2187355279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093677636 + 1093677637.

It is an arithmetic number, because the mean of its divisors is an integer number (1093677637).

Almost surely, 2^2187355273 is an apocalyptic number.

It is an amenable number.

2187355273 is a deficient number, since it is larger than the sum of its proper divisors (1).

2187355273 is an equidigital number, since it uses as much as digits as its factorization.

2187355273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 43.

The square root of 2187355273 is about 46769.1701123721. The cubic root of 2187355273 is about 1298.0948964850.

The spelling of 2187355273 in words is "two billion, one hundred eighty-seven million, three hundred fifty-five thousand, two hundred seventy-three".