208215041 has 4 divisors (see below), whose sum is σ = 215394900. Its totient is φ = 201035184.

The previous prime is 208215037. The next prime is 208215047. The reversal of 208215041 is 140512802.

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

It can be written as a sum of positive squares in 2 ways, for example, as 123298816 + 84916225 = 11104^2 + 9215^2 .

It is a cyclic number.

It is not a de Polignac number, because 208215041 - 2² = 208215037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208214998 and 208215016.

It is not an unprimeable number, because it can be changed into a prime (208215047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3589886 + ... + 3589943.

It is an arithmetic number, because the mean of its divisors is an integer number (53848725).

Almost surely, 2^208215041 is an apocalyptic number.

It is an amenable number.

208215041 is a deficient number, since it is larger than the sum of its proper divisors (7179859).

208215041 is an equidigital number, since it uses as much as digits as its factorization.

208215041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7179858.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 208215041 is about 14429.6583812646. The cubic root of 208215041 is about 592.7033286501.

Adding to 208215041 its reverse (140512802), we get a palindrome (348727843).

The spelling of 208215041 in words is "two hundred eight million, two hundred fifteen thousand, forty-one".