220957 has 8 divisors (see below), whose sum is σ = 246240. Its totient is φ = 196560.

The previous prime is 220939. The next prime is 220973. The reversal of 220957 is 759022.

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

It is a cyclic number.

It is not a de Polignac number, because 220957 - 2¹⁵ = 188189 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 (220907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394 + ... + 772.

It is an arithmetic number, because the mean of its divisors is an integer number (30780).

2²²⁰⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

220957 is a deficient number, since it is larger than the sum of its proper divisors (25283).

220957 is a wasteful number, since it uses less digits than its factorization.

220957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 220957 is about 470.0606343867. The cubic root of 220957 is about 60.4555145056.

Adding to 220957 its reverse (759022), we get a palindrome (979979).

It can be divided in two parts, 2 and 20957, that multiplied together give a palindrome (41914).

The spelling of 220957 in words is "two hundred twenty thousand, nine hundred fifty-seven".