551351543 has 2 divisors, whose sum is σ = 551351544. Its totient is φ = 551351542.

The previous prime is 551351473. The next prime is 551351573. The reversal of 551351543 is 345153155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551351543 - 2²⁰ = 550302967 is a prime.

It is a Sophie Germain 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 (551351573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275675771 + 275675772.

It is an arithmetic number, because the mean of its divisors is an integer number (275675772).

Almost surely, 2^551351543 is an apocalyptic number.

551351543 is a deficient number, since it is larger than the sum of its proper divisors (1).

551351543 is an equidigital number, since it uses as much as digits as its factorization.

551351543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22500, while the sum is 32.

The square root of 551351543 is about 23480.8761122749. The cubic root of 551351543 is about 819.9918415805.

The spelling of 551351543 in words is "five hundred fifty-one million, three hundred fifty-one thousand, five hundred forty-three".