220552001 has 4 divisors (see below), whose sum is σ = 220702404. Its totient is φ = 220401600.

The previous prime is 220551979. The next prime is 220552021. The reversal of 220552001 is 100255022.

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 107661376 + 112890625 = 10376^2 + 10625^2 .

It is a cyclic number.

It is not a de Polignac number, because 220552001 - 2²⁶ = 153443137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220552021) 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, 72980 + ... + 75941.

It is an arithmetic number, because the mean of its divisors is an integer number (55175601).

Almost surely, 2^220552001 is an apocalyptic number.

It is an amenable number.

220552001 is a deficient number, since it is larger than the sum of its proper divisors (150403).

220552001 is a wasteful number, since it uses less digits than its factorization.

220552001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150402.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 220552001 is about 14850.9932664452. The cubic root of 220552001 is about 604.1855498011.

Adding to 220552001 its product of nonzero digits (200), we get a square (220552201 = 14851²).

The spelling of 220552001 in words is "two hundred twenty million, five hundred fifty-two thousand, one".