551066407 has 16 divisors (see below), whose sum is σ = 609887232. Its totient is φ = 495256960.

The previous prime is 551066401. The next prime is 551066423. The reversal of 551066407 is 704660155.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551066407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551066401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402438 + ... + 403804.

It is an arithmetic number, because the mean of its divisors is an integer number (38117952).

Almost surely, 2^551066407 is an apocalyptic number.

551066407 is a deficient number, since it is larger than the sum of its proper divisors (58820825).

551066407 is a wasteful number, since it uses less digits than its factorization.

551066407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 551066407 is about 23474.8036626507. The cubic root of 551066407 is about 819.8504620235.

It can be divided in two parts, 5510 and 66407, that added together give a palindrome (71917).

The spelling of 551066407 in words is "five hundred fifty-one million, sixty-six thousand, four hundred seven".