551121207 has 32 divisors (see below), whose sum is σ = 906178560. Its totient is φ = 290131200.

The previous prime is 551121203. The next prime is 551121217. The reversal of 551121207 is 702121155.

551121207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 551121207 - 2² = 551121203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551121203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162394 + ... + 165752.

It is an arithmetic number, because the mean of its divisors is an integer number (28318080).

Almost surely, 2^551121207 is an apocalyptic number.

551121207 is a deficient number, since it is larger than the sum of its proper divisors (355057353).

551121207 is a wasteful number, since it uses less digits than its factorization.

551121207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3983.

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 551121207 is about 23475.9708425445. The cubic root of 551121207 is about 819.8776374029.

The spelling of 551121207 in words is "five hundred fifty-one million, one hundred twenty-one thousand, two hundred seven".