220302541 has 4 divisors (see below), whose sum is σ = 233261532. Its totient is φ = 207343552.

The previous prime is 220302517. The next prime is 220302581. The reversal of 220302541 is 145203022.

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 129481641 + 90820900 = 11379^2 + 9530^2 .

It is a cyclic number.

It is not a de Polignac number, because 220302541 - 2⁷ = 220302413 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 (220302581) 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, 6479470 + ... + 6479503.

It is an arithmetic number, because the mean of its divisors is an integer number (58315383).

Almost surely, 2^220302541 is an apocalyptic number.

It is an amenable number.

220302541 is a deficient number, since it is larger than the sum of its proper divisors (12958991).

220302541 is a wasteful number, since it uses less digits than its factorization.

220302541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12958990.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 220302541 is about 14842.5921253668. The cubic root of 220302541 is about 603.9576715874.

Adding to 220302541 its reverse (145203022), we get a palindrome (365505563).

The spelling of 220302541 in words is "two hundred twenty million, three hundred two thousand, five hundred forty-one".