551051509 has 8 divisors (see below), whose sum is σ = 582659840. Its totient is φ = 519703776.

The previous prime is 551051489. The next prime is 551051513. The reversal of 551051509 is 905150155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 551051509 - 2²⁵ = 517497077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551051569) 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 7 ways as a sum of consecutive naturals, for example, 60792 + ... + 69265.

It is an arithmetic number, because the mean of its divisors is an integer number (72832480).

Almost surely, 2^551051509 is an apocalyptic number.

It is an amenable number.

551051509 is a deficient number, since it is larger than the sum of its proper divisors (31608331).

551051509 is a wasteful number, since it uses less digits than its factorization.

551051509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130299.

The product of its (nonzero) digits is 5625, while the sum is 31.

The square root of 551051509 is about 23474.4863415581. The cubic root of 551051509 is about 819.8430737777.

The spelling of 551051509 in words is "five hundred fifty-one million, fifty-one thousand, five hundred nine".