122345557 has 4 divisors (see below), whose sum is σ = 122660460. Its totient is φ = 122030656.

The previous prime is 122345537. The next prime is 122345581. The reversal of 122345557 is 755543221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 755543221 = 2351 ⋅321371.

It can be written as a sum of positive squares in 2 ways, for example, as 36857041 + 85488516 = 6071^2 + 9246^2 .

It is a cyclic number.

It is not a de Polignac number, because 122345557 - 2⁷ = 122345429 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122345507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156868 + ... + 157645.

It is an arithmetic number, because the mean of its divisors is an integer number (30665115).

Almost surely, 2^122345557 is an apocalyptic number.

It is an amenable number.

122345557 is a deficient number, since it is larger than the sum of its proper divisors (314903).

122345557 is an equidigital number, since it uses as much as digits as its factorization.

122345557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314902.

The product of its digits is 42000, while the sum is 34.

The square root of 122345557 is about 11060.9925865629. The cubic root of 122345557 is about 496.4353901716.

Adding to 122345557 its reverse (755543221), we get a palindrome (877888778).

The spelling of 122345557 in words is "one hundred twenty-two million, three hundred forty-five thousand, five hundred fifty-seven".