551308069 has 4 divisors (see below), whose sum is σ = 593716396. Its totient is φ = 508899744.

The previous prime is 551308063. The next prime is 551308141. The reversal of 551308069 is 960803155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 260435044 + 290873025 = 16138^2 + 17055^2 .

It is a cyclic number.

It is not a de Polignac number, because 551308069 - 2⁷ = 551307941 is a prime.

It is a super-2 number, since 2×551308069² = 607881173889017522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551308063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21204144 + ... + 21204169.

It is an arithmetic number, because the mean of its divisors is an integer number (148429099).

Almost surely, 2^551308069 is an apocalyptic number.

It is an amenable number.

551308069 is a deficient number, since it is larger than the sum of its proper divisors (42408327).

551308069 is a wasteful number, since it uses less digits than its factorization.

551308069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42408326.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 551308069 is about 23479.9503619578. The cubic root of 551308069 is about 819.9702889294.

The spelling of 551308069 in words is "five hundred fifty-one million, three hundred eight thousand, sixty-nine".