551140122 has 128 divisors (see below), whose sum is σ = 1300561920. Its totient is φ = 154344960.

The previous prime is 551140067. The next prime is 551140171. The reversal of 551140122 is 221041155.

551140122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4339623 + ... + 4339749.

It is an arithmetic number, because the mean of its divisors is an integer number (10160640).

Almost surely, 2^551140122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551140122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (650280960).

551140122 is an abundant number, since it is smaller than the sum of its proper divisors (749421798).

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

551140122 is a wasteful number, since it uses less digits than its factorization.

551140122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 551140122 is about 23476.3736978265. The cubic root of 551140122 is about 819.8870169538.

Adding to 551140122 its reverse (221041155), we get a palindrome (772181277).

The spelling of 551140122 in words is "five hundred fifty-one million, one hundred forty thousand, one hundred twenty-two".