22103557 has 6 divisors (see below), whose sum is σ = 25712358. Its totient is φ = 18945864.

The previous prime is 22103513. The next prime is 22103561. The reversal of 22103557 is 75530122.

It can be written as a sum of positive squares in only one way, i.e., 18714276 + 3389281 = 4326^2 + 1841^2 .

It is a de Polignac number, because none of the positive numbers 2^k-22103557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22103057) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 225498 + ... + 225595.

It is an arithmetic number, because the mean of its divisors is an integer number (4285393).

Almost surely, 2^22103557 is an apocalyptic number.

It is an amenable number.

22103557 is a deficient number, since it is larger than the sum of its proper divisors (3608801).

22103557 is an equidigital number, since it uses as much as digits as its factorization.

22103557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451107 (or 451100 counting only the distinct ones).

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

The square root of 22103557 is about 4701.4420128297. The cubic root of 22103557 is about 280.6428977363.

Adding to 22103557 its reverse (75530122), we get a palindrome (97633679).

The spelling of 22103557 in words is "twenty-two million, one hundred three thousand, five hundred fifty-seven".