122551805 has 8 divisors (see below), whose sum is σ = 154802400. Its totient is φ = 92881296.

The previous prime is 122551801. The next prime is 122551817. The reversal of 122551805 is 508155221.

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

It is a cyclic number.

It is not a de Polignac number, because 122551805 - 2² = 122551801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122551801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644915 + ... + 645104.

It is an arithmetic number, because the mean of its divisors is an integer number (19350300).

Almost surely, 2^122551805 is an apocalyptic number.

It is an amenable number.

122551805 is a deficient number, since it is larger than the sum of its proper divisors (32250595).

122551805 is a wasteful number, since it uses less digits than its factorization.

122551805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290043.

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 122551805 is about 11070.3118745589. The cubic root of 122551805 is about 496.7141942617.

The spelling of 122551805 in words is "one hundred twenty-two million, five hundred fifty-one thousand, eight hundred five".