551253551 has 2 divisors, whose sum is σ = 551253552. Its totient is φ = 551253550.

The previous prime is 551253541. The next prime is 551253557. The reversal of 551253551 is 155352155.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551253551 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 (551253557) 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, 275626775 + 275626776.

It is an arithmetic number, because the mean of its divisors is an integer number (275626776).

Almost surely, 2^551253551 is an apocalyptic number.

551253551 is a deficient number, since it is larger than the sum of its proper divisors (1).

551253551 is an equidigital number, since it uses as much as digits as its factorization.

551253551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18750, while the sum is 32.

The square root of 551253551 is about 23478.7893853154. The cubic root of 551253551 is about 819.9432595084.

The spelling of 551253551 in words is "five hundred fifty-one million, two hundred fifty-three thousand, five hundred fifty-one".