551742665 has 8 divisors (see below), whose sum is σ = 662505480. Its totient is φ = 441117952.

The previous prime is 551742643. The next prime is 551742677. The reversal of 551742665 is 566247155.

551742665 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5071504 + 546671161 = 2252^2 + 23381^2 .

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 551742665 - 2¹⁸ = 551480521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25520 + ... + 41889.

It is an arithmetic number, because the mean of its divisors is an integer number (82813185).

Almost surely, 2^551742665 is an apocalyptic number.

It is an amenable number.

551742665 is a deficient number, since it is larger than the sum of its proper divisors (110762815).

551742665 is a wasteful number, since it uses less digits than its factorization.

551742665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69051.

The product of its digits is 252000, while the sum is 41.

The square root of 551742665 is about 23489.2031580469. The cubic root of 551742665 is about 820.1856931232.

The spelling of 551742665 in words is "five hundred fifty-one million, seven hundred forty-two thousand, six hundred sixty-five".