1220353 has 2 divisors, whose sum is σ = 1220354. Its totient is φ = 1220352.

The previous prime is 1220347. The next prime is 1220363. The reversal of 1220353 is 3530221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1192464 + 27889 = 1092^2 + 167^2 .

It is an emirp because it is prime and its reverse (3530221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220353 is a prime.

It is a super-2 number, since 2×1220353² = 2978522889218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1220333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610176 + 610177.

It is an arithmetic number, because the mean of its divisors is an integer number (610177).

2^1220353 is an apocalyptic number.

It is an amenable number.

1220353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220353 is an equidigital number, since it uses as much as digits as its factorization.

1220353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 1220353 is about 1104.6958857532. The cubic root of 1220353 is about 106.8632777860.

Adding to 1220353 its reverse (3530221), we get a palindrome (4750574).

The spelling of 1220353 in words is "one million, two hundred twenty thousand, three hundred fifty-three".