122247557 has 8 divisors (see below), whose sum is σ = 126590040. Its totient is φ = 117913600.

The previous prime is 122247481. The next prime is 122247571. The reversal of 122247557 is 755742221.

It can be written as a sum of positive squares in 4 ways, for example, as 37625956 + 84621601 = 6134^2 + 9199^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122247557 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 (122247457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45113 + ... + 47745.

It is an arithmetic number, because the mean of its divisors is an integer number (15823755).

Almost surely, 2^122247557 is an apocalyptic number.

It is an amenable number.

122247557 is a deficient number, since it is larger than the sum of its proper divisors (4342483).

122247557 is a wasteful number, since it uses less digits than its factorization.

122247557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4263.

The product of its digits is 39200, while the sum is 35.

The square root of 122247557 is about 11056.5617169172. The cubic root of 122247557 is about 496.3028048803.

Adding to 122247557 its reverse (755742221), we get a palindrome (877989778).

The spelling of 122247557 in words is "one hundred twenty-two million, two hundred forty-seven thousand, five hundred fifty-seven".