551085329 has 16 divisors (see below), whose sum is σ = 588057600. Its totient is φ = 514953936.

The previous prime is 551085317. The next prime is 551085341. The reversal of 551085329 is 923580155.

It is an interprime number because it is at equal distance from previous prime (551085317) and next prime (551085341).

It is a cyclic number.

It is not a de Polignac number, because 551085329 - 2¹² = 551081233 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 551085292 and 551085301.

It is not an unprimeable number, because it can be changed into a prime (551085929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 741332 + ... + 742074.

It is an arithmetic number, because the mean of its divisors is an integer number (36753600).

Almost surely, 2^551085329 is an apocalyptic number.

It is an amenable number.

551085329 is a deficient number, since it is larger than the sum of its proper divisors (36972271).

551085329 is a wasteful number, since it uses less digits than its factorization.

551085329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244.

The product of its (nonzero) digits is 54000, while the sum is 38.

The square root of 551085329 is about 23475.2066870560. The cubic root of 551085329 is about 819.8598456675.

The spelling of 551085329 in words is "five hundred fifty-one million, eighty-five thousand, three hundred twenty-nine".