1000550965 has 4 divisors (see below), whose sum is σ = 1200661164. Its totient is φ = 800440768.

The previous prime is 1000550951. The next prime is 1000550977. The reversal of 1000550965 is 5690550001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5690550001 = 3119 ⋅1824479.

It can be written as a sum of positive squares in 2 ways, for example, as 157577809 + 842973156 = 12553^2 + 29034^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000550965 - 2¹¹ = 1000548917 is a prime.

It is a super-2 number, since 2×1000550965² = 2002204467124862450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 100055092 + ... + 100055101.

It is an arithmetic number, because the mean of its divisors is an integer number (300165291).

Almost surely, 2^1000550965 is an apocalyptic number.

It is an amenable number.

1000550965 is a deficient number, since it is larger than the sum of its proper divisors (200110199).

1000550965 is an equidigital number, since it uses as much as digits as its factorization.

1000550965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200110198.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 1000550965 is about 31631.4869236335. The cubic root of 1000550965 is about 1000.1836212812.

The spelling of 1000550965 in words is "one billion, five hundred fifty thousand, nine hundred sixty-five".