122550561 has 24 divisors (see below), whose sum is σ = 203374080. Its totient is φ = 69659136.

The previous prime is 122550557. The next prime is 122550613. The reversal of 122550561 is 165055221.

It is not a de Polignac number, because 122550561 - 2² = 122550557 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122558561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7120 + ... + 17198.

It is an arithmetic number, because the mean of its divisors is an integer number (8473920).

Almost surely, 2^122550561 is an apocalyptic number.

It is an amenable number.

122550561 is a deficient number, since it is larger than the sum of its proper divisors (80823519).

122550561 is a wasteful number, since it uses less digits than its factorization.

122550561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10285 (or 10282 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 122550561 is about 11070.2556881040. The cubic root of 122550561 is about 496.7125135723.

The spelling of 122550561 in words is "one hundred twenty-two million, five hundred fifty thousand, five hundred sixty-one".