202113541 has 4 divisors (see below), whose sum is σ = 230986912. Its totient is φ = 173240172.

The previous prime is 202113523. The next prime is 202113563. The reversal of 202113541 is 145311202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 202113541 - 2⁷ = 202113413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202113511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14436675 + ... + 14436688.

It is an arithmetic number, because the mean of its divisors is an integer number (57746728).

Almost surely, 2^202113541 is an apocalyptic number.

It is an amenable number.

202113541 is a deficient number, since it is larger than the sum of its proper divisors (28873371).

202113541 is an equidigital number, since it uses as much as digits as its factorization.

202113541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28873370.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 202113541 is about 14216.6642008595. The cubic root of 202113541 is about 586.8563438780.

Adding to 202113541 its reverse (145311202), we get a palindrome (347424743).

The spelling of 202113541 in words is "two hundred two million, one hundred thirteen thousand, five hundred forty-one".