1000105553 has 4 divisors (see below), whose sum is σ = 1016500788. Its totient is φ = 983710320.

The previous prime is 1000105541. The next prime is 1000105591. The reversal of 1000105553 is 3555010001.

It is a happy number.

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 134745664 + 865359889 = 11608^2 + 29417^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000105553 - 2¹⁶ = 1000040017 is a prime.

It is a super-2 number, since 2×1000105553² = 2000422234282871618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000108553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8197526 + ... + 8197647.

It is an arithmetic number, because the mean of its divisors is an integer number (254125197).

Almost surely, 2^1000105553 is an apocalyptic number.

It is an amenable number.

1000105553 is a deficient number, since it is larger than the sum of its proper divisors (16395235).

1000105553 is an equidigital number, since it uses as much as digits as its factorization.

1000105553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16395234.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 1000105553 is about 31624.4454971150. The cubic root of 1000105553 is about 1000.0351830955.

Adding to 1000105553 its reverse (3555010001), we get a palindrome (4555115554).

The spelling of 1000105553 in words is "one billion, one hundred five thousand, five hundred fifty-three".