550155065 has 4 divisors (see below), whose sum is σ = 660186084. Its totient is φ = 440124048.

The previous prime is 550155059. The next prime is 550155079. The reversal of 550155065 is 560551055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101223721 + 448931344 = 10061^2 + 21188^2 .

It is a cyclic number.

It is not a de Polignac number, because 550155065 - 2⁸ = 550154809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55015502 + ... + 55015511.

It is an arithmetic number, because the mean of its divisors is an integer number (165046521).

Almost surely, 2^550155065 is an apocalyptic number.

It is an amenable number.

550155065 is a deficient number, since it is larger than the sum of its proper divisors (110031019).

550155065 is a wasteful number, since it uses less digits than its factorization.

550155065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110031018.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 550155065 is about 23455.3845630380. The cubic root of 550155065 is about 819.3982621854.

The spelling of 550155065 in words is "five hundred fifty million, one hundred fifty-five thousand, sixty-five".