551533069 has 2 divisors, whose sum is σ = 551533070. Its totient is φ = 551533068.

The previous prime is 551533067. The next prime is 551533139. The reversal of 551533069 is 960335155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 443102500 + 108430569 = 21050^2 + 10413^2 .

It is a cyclic number.

It is not a de Polignac number, because 551533069 - 2¹ = 551533067 is a prime.

It is a super-2 number, since 2×551533069² = 608377452401117522, which contains 22 as substring.

Together with 551533067, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551533061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275766534 + 275766535.

It is an arithmetic number, because the mean of its divisors is an integer number (275766535).

Almost surely, 2^551533069 is an apocalyptic number.

It is an amenable number.

551533069 is a deficient number, since it is larger than the sum of its proper divisors (1).

551533069 is an equidigital number, since it uses as much as digits as its factorization.

551533069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60750, while the sum is 37.

The square root of 551533069 is about 23484.7411950824. The cubic root of 551533069 is about 820.0818225907.

The spelling of 551533069 in words is "five hundred fifty-one million, five hundred thirty-three thousand, sixty-nine".