220401501 has 16 divisors (see below), whose sum is σ = 309758400. Its totient is φ = 139010688.

The previous prime is 220401497. The next prime is 220401509. The reversal of 220401501 is 105104022.

It is not a de Polignac number, because 220401501 - 2² = 220401497 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220401509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47785 + ... + 52193.

It is an arithmetic number, because the mean of its divisors is an integer number (19359900).

Almost surely, 2^220401501 is an apocalyptic number.

It is an amenable number.

220401501 is a deficient number, since it is larger than the sum of its proper divisors (89356899).

220401501 is a wasteful number, since it uses less digits than its factorization.

220401501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5308.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 220401501 is about 14845.9254005939. The cubic root of 220401501 is about 604.0480907355.

Adding to 220401501 its reverse (105104022), we get a palindrome (325505523).

The spelling of 220401501 in words is "two hundred twenty million, four hundred one thousand, five hundred one".