1005517055 has 4 divisors (see below), whose sum is σ = 1206620472. Its totient is φ = 804413640.

The previous prime is 1005517049. The next prime is 1005517061. The reversal of 1005517055 is 5507155001.

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

It is an interprime number because it is at equal distance from previous prime (1005517049) and next prime (1005517061).

It is not a de Polignac number, because 1005517055 - 2⁶ = 1005516991 is a prime.

It is a super-2 number, since 2×1005517055² = 2022129095791746050, 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, 100551701 + ... + 100551710.

It is an arithmetic number, because the mean of its divisors is an integer number (301655118).

Almost surely, 2^1005517055 is an apocalyptic number.

1005517055 is a deficient number, since it is larger than the sum of its proper divisors (201103417).

1005517055 is an equidigital number, since it uses as much as digits as its factorization.

1005517055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201103416.

The product of its (nonzero) digits is 4375, while the sum is 29.

The square root of 1005517055 is about 31709.8889149741. Note that the first 3 decimals coincide. The cubic root of 1005517055 is about 1001.8356466728.

It can be divided in two parts, 100 and 5517055, that added together give a palindrome (5517155).

The spelling of 1005517055 in words is "one billion, five million, five hundred seventeen thousand, fifty-five".