1000551505 has 16 divisors (see below), whose sum is σ = 1256385024. Its totient is φ = 764000640.

The previous prime is 1000551499. The next prime is 1000551509. The reversal of 1000551505 is 5051550001.

1000551505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-1000551505 is a prime.

It is a super-2 number, since 2×1000551505² = 2002206628315530050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000551509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32899 + ... + 55528.

It is an arithmetic number, because the mean of its divisors is an integer number (78524064).

Almost surely, 2^1000551505 is an apocalyptic number.

It is an amenable number.

1000551505 is a deficient number, since it is larger than the sum of its proper divisors (255833519).

1000551505 is an equidigital number, since it uses as much as digits as its factorization.

1000551505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88536.

The product of its (nonzero) digits is 625, while the sum is 22.

The square root of 1000551505 is about 31631.4954594309. The cubic root of 1000551505 is about 1000.1838012150.

The spelling of 1000551505 in words is "one billion, five hundred fifty-one thousand, five hundred five".