205413501 has 4 divisors (see below), whose sum is σ = 273884672. Its totient is φ = 136942332.

The previous prime is 205413487. The next prime is 205413539. The reversal of 205413501 is 105314502.

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 205413501 - 2¹³ = 205405309 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 (205413581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34235581 + ... + 34235586.

It is an arithmetic number, because the mean of its divisors is an integer number (68471168).

Almost surely, 2^205413501 is an apocalyptic number.

It is an amenable number.

205413501 is a deficient number, since it is larger than the sum of its proper divisors (68471171).

205413501 is an equidigital number, since it uses as much as digits as its factorization.

205413501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68471170.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 205413501 is about 14332.2538702048. The cubic root of 205413501 is about 590.0330355916.

It can be divided in two parts, 20541 and 3501, that added together give a palindrome (24042).

The spelling of 205413501 in words is "two hundred five million, four hundred thirteen thousand, five hundred one".