122557717 has 16 divisors (see below), whose sum is σ = 128459520. Its totient is φ = 116841472.

The previous prime is 122557711. The next prime is 122557753. The reversal of 122557717 is 717755221.

It is a cyclic number.

It is not a de Polignac number, because 122557717 - 2¹⁵ = 122524949 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 (122557711) 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 15 ways as a sum of consecutive naturals, for example, 347013 + ... + 347365.

It is an arithmetic number, because the mean of its divisors is an integer number (8028720).

Almost surely, 2^122557717 is an apocalyptic number.

It is an amenable number.

122557717 is a deficient number, since it is larger than the sum of its proper divisors (5901803).

122557717 is an equidigital number, since it uses as much as digits as its factorization.

122557717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572.

The product of its digits is 34300, while the sum is 37.

The square root of 122557717 is about 11070.5788918195. The cubic root of 122557717 is about 496.7221814338.

The spelling of 122557717 in words is "one hundred twenty-two million, five hundred fifty-seven thousand, seven hundred seventeen".