122556506 has 8 divisors (see below), whose sum is σ = 188803380. Its totient is φ = 59622048.

The previous prime is 122556433. The next prime is 122556509. The reversal of 122556506 is 605655221.

It can be written as a sum of positive squares in 2 ways, for example, as 122301481 + 255025 = 11059^2 + 505^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122556509) 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, 828011 + ... + 828158.

Almost surely, 2^122556506 is an apocalyptic number.

122556506 is a deficient number, since it is larger than the sum of its proper divisors (66246874).

122556506 is a wasteful number, since it uses less digits than its factorization.

122556506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656208.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 122556506 is about 11070.5241971643. The cubic root of 122556506 is about 496.7205453814.

The spelling of 122556506 in words is "one hundred twenty-two million, five hundred fifty-six thousand, five hundred six".