122551326 has 64 divisors (see below), whose sum is σ = 283449600. Its totient is φ = 39214368.

The previous prime is 122551307. The next prime is 122551327. The reversal of 122551326 is 623155221.

It is a happy number.

122551326 is a `hidden beast` number, since 122 + 5 + 513 + 26 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 122551326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122551327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165465 + ... + 166203.

It is an arithmetic number, because the mean of its divisors is an integer number (4428900).

Almost surely, 2^122551326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122551326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141724800).

122551326 is an abundant number, since it is smaller than the sum of its proper divisors (160898274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122551326 is a wasteful number, since it uses less digits than its factorization.

122551326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 864 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 122551326 is about 11070.2902400976. The cubic root of 122551326 is about 496.7135471165.

The spelling of 122551326 in words is "one hundred twenty-two million, five hundred fifty-one thousand, three hundred twenty-six".