551253557 has 2 divisors, whose sum is σ = 551253558. Its totient is φ = 551253556.

The previous prime is 551253551. The next prime is 551253607. The reversal of 551253557 is 755352155.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 547513201 + 3740356 = 23399^2 + 1934^2 .

It is a cyclic number.

It is not a de Polignac number, because 551253557 - 2⁴ = 551253541 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551253557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551253551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275626778 + 275626779.

It is an arithmetic number, because the mean of its divisors is an integer number (275626779).

Almost surely, 2^551253557 is an apocalyptic number.

It is an amenable number.

551253557 is a deficient number, since it is larger than the sum of its proper divisors (1).

551253557 is an equidigital number, since it uses as much as digits as its factorization.

551253557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131250, while the sum is 38.

The square root of 551253557 is about 23478.7895130903. The cubic root of 551253557 is about 819.9432624832.

The spelling of 551253557 in words is "five hundred fifty-one million, two hundred fifty-three thousand, five hundred fifty-seven".