551670009 has 32 divisors (see below), whose sum is σ = 852114816. Its totient is φ = 313758720.

The previous prime is 551669983. The next prime is 551670023. The reversal of 551670009 is 900076155.

It is not a de Polignac number, because 551670009 - 2⁵ = 551669977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (551670059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 221479 + ... + 223955.

It is an arithmetic number, because the mean of its divisors is an integer number (26628588).

Almost surely, 2^551670009 is an apocalyptic number.

It is an amenable number.

551670009 is a deficient number, since it is larger than the sum of its proper divisors (300444807).

551670009 is a wasteful number, since it uses less digits than its factorization.

551670009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905.

The product of its (nonzero) digits is 9450, while the sum is 33.

The square root of 551670009 is about 23487.6565242257. The cubic root of 551670009 is about 820.1496896071.

The spelling of 551670009 in words is "five hundred fifty-one million, six hundred seventy thousand, nine".