551742551 has 2 divisors, whose sum is σ = 551742552. Its totient is φ = 551742550.

The previous prime is 551742509. The next prime is 551742563. The reversal of 551742551 is 155247155.

551742551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551742551 - 2²⁶ = 484633687 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551742151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275871275 + 275871276.

It is an arithmetic number, because the mean of its divisors is an integer number (275871276).

Almost surely, 2^551742551 is an apocalyptic number.

551742551 is a deficient number, since it is larger than the sum of its proper divisors (1).

551742551 is an equidigital number, since it uses as much as digits as its factorization.

551742551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35000, while the sum is 35.

The square root of 551742551 is about 23489.2007314000. The cubic root of 551742551 is about 820.1856366348.

The spelling of 551742551 in words is "five hundred fifty-one million, seven hundred forty-two thousand, five hundred fifty-one".