202555139 has 4 divisors (see below), whose sum is σ = 202655856. Its totient is φ = 202454424.

The previous prime is 202555127. The next prime is 202555141. The reversal of 202555139 is 931555202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 202555139 - 2⁴ = 202555123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202545139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47279 + ... + 51384.

It is an arithmetic number, because the mean of its divisors is an integer number (50663964).

Almost surely, 2^202555139 is an apocalyptic number.

202555139 is a deficient number, since it is larger than the sum of its proper divisors (100717).

202555139 is an equidigital number, since it uses as much as digits as its factorization.

202555139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100716.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 202555139 is about 14232.1867258689. The cubic root of 202555139 is about 587.2834405697.

The spelling of 202555139 in words is "two hundred two million, five hundred fifty-five thousand, one hundred thirty-nine".