202555091 has 2 divisors, whose sum is σ = 202555092. Its totient is φ = 202555090.

The previous prime is 202555049. The next prime is 202555097. The reversal of 202555091 is 190555202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202555091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (202555097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101277545 + 101277546.

It is an arithmetic number, because the mean of its divisors is an integer number (101277546).

Almost surely, 2^202555091 is an apocalyptic number.

202555091 is a deficient number, since it is larger than the sum of its proper divisors (1).

202555091 is an equidigital number, since it uses as much as digits as its factorization.

202555091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 202555091 is about 14232.1850395503. The cubic root of 202555091 is about 587.2833941797.

The spelling of 202555091 in words is "two hundred two million, five hundred fifty-five thousand, ninety-one".