1223257 has 8 divisors (see below), whose sum is σ = 1436096. Its totient is φ = 1019952.

The previous prime is 1223237. The next prime is 1223263. The reversal of 1223257 is 7523221.

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 1223257 - 2¹⁵ = 1190489 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223207) 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, 2103 + ... + 2620.

It is an arithmetic number, because the mean of its divisors is an integer number (179512).

2^1223257 is an apocalyptic number.

It is an amenable number.

1223257 is a deficient number, since it is larger than the sum of its proper divisors (212839).

1223257 is an equidigital number, since it uses as much as digits as its factorization.

1223257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4767.

The product of its digits is 840, while the sum is 22.

The square root of 1223257 is about 1106.0094936301. The cubic root of 1223257 is about 106.9479759908.

Adding to 1223257 its reverse (7523221), we get a palindrome (8746478).

The spelling of 1223257 in words is "one million, two hundred twenty-three thousand, two hundred fifty-seven".