551559969 has 16 divisors (see below), whose sum is σ = 817597440. Its totient is φ = 367494480.

The previous prime is 551559929. The next prime is 551559973. The reversal of 551559969 is 969955155.

It is not a de Polignac number, because 551559969 - 2²⁹ = 14689057 is a prime.

It is a super-2 number, since 2×551559969² = 608436798806561922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (551559929) 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, 52159 + ... + 61835.

It is an arithmetic number, because the mean of its divisors is an integer number (51099840).

Almost surely, 2^551559969 is an apocalyptic number.

It is an amenable number.

551559969 is a deficient number, since it is larger than the sum of its proper divisors (266037471).

551559969 is a wasteful number, since it uses less digits than its factorization.

551559969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11797 (or 11791 counting only the distinct ones).

The product of its digits is 2733750, while the sum is 54.

The square root of 551559969 is about 23485.3139003932. The cubic root of 551559969 is about 820.0951550293.

The spelling of 551559969 in words is "five hundred fifty-one million, five hundred fifty-nine thousand, nine hundred sixty-nine".