551205607 has 2 divisors, whose sum is σ = 551205608. Its totient is φ = 551205606.

The previous prime is 551205547. The next prime is 551205631. The reversal of 551205607 is 706502155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551205607 - 2¹¹ = 551203559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551205647) 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 as a sum of consecutive naturals, namely, 275602803 + 275602804.

It is an arithmetic number, because the mean of its divisors is an integer number (275602804).

Almost surely, 2^551205607 is an apocalyptic number.

551205607 is a deficient number, since it is larger than the sum of its proper divisors (1).

551205607 is an equidigital number, since it uses as much as digits as its factorization.

551205607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 551205607 is about 23477.7683564686. The cubic root of 551205607 is about 819.9194879310.

The spelling of 551205607 in words is "five hundred fifty-one million, two hundred five thousand, six hundred seven".