220531597 has 8 divisors (see below), whose sum is σ = 259086240. Its totient is φ = 185061360.

The previous prime is 220531583. The next prime is 220531603. The reversal of 220531597 is 795135022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220531597 - 2⁷ = 220531469 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 (220531547) 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 7 ways as a sum of consecutive naturals, for example, 770947 + ... + 771232.

It is an arithmetic number, because the mean of its divisors is an integer number (32385780).

Almost surely, 2^220531597 is an apocalyptic number.

It is an amenable number.

220531597 is a deficient number, since it is larger than the sum of its proper divisors (38554643).

220531597 is a wasteful number, since it uses less digits than its factorization.

220531597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542203.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 220531597 is about 14850.3062931375. The cubic root of 220531597 is about 604.1669174875.

The spelling of 220531597 in words is "two hundred twenty million, five hundred thirty-one thousand, five hundred ninety-seven".