10223557 has 4 divisors (see below), whose sum is σ = 10251340. Its totient is φ = 10195776.

The previous prime is 10223537. The next prime is 10223561. The reversal of 10223557 is 75532201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75532201 = 19 ⋅3975379.

It can be written as a sum of positive squares in 2 ways, for example, as 2461761 + 7761796 = 1569^2 + 2786^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10223557 is a prime.

It is a super-2 number, since 2×10223557² = 209042235464498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10223527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13332 + ... + 14077.

It is an arithmetic number, because the mean of its divisors is an integer number (2562835).

Almost surely, 2^10223557 is an apocalyptic number.

It is an amenable number.

10223557 is a deficient number, since it is larger than the sum of its proper divisors (27783).

10223557 is an equidigital number, since it uses as much as digits as its factorization.

10223557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27782.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 10223557 is about 3197.4297490328. The cubic root of 10223557 is about 217.0371148477.

Adding to 10223557 its reverse (75532201), we get a palindrome (85755758).

The spelling of 10223557 in words is "ten million, two hundred twenty-three thousand, five hundred fifty-seven".