551627257 has 2 divisors, whose sum is σ = 551627258. Its totient is φ = 551627256.

The previous prime is 551627227. The next prime is 551627261. The reversal of 551627257 is 752726155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 529874361 + 21752896 = 23019^2 + 4664^2 .

It is a cyclic number.

It is not a de Polignac number, because 551627257 - 2¹⁵ = 551594489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (551627227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275813628 + 275813629.

It is an arithmetic number, because the mean of its divisors is an integer number (275813629).

Almost surely, 2^551627257 is an apocalyptic number.

It is an amenable number.

551627257 is a deficient number, since it is larger than the sum of its proper divisors (1).

551627257 is an equidigital number, since it uses as much as digits as its factorization.

551627257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147000, while the sum is 40.

The square root of 551627257 is about 23486.7464115403. The cubic root of 551627257 is about 820.1285030616.

The spelling of 551627257 in words is "five hundred fifty-one million, six hundred twenty-seven thousand, two hundred fifty-seven".