1005505144 has 16 divisors (see below), whose sum is σ = 2154654000. Its totient is φ = 430930752.

The previous prime is 1005505141. The next prime is 1005505147. The reversal of 1005505144 is 4415055001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1005505141) and next prime (1005505147).

It is a super-2 number, since 2×1005505144² = 2022081189220921472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005505141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8977669 + ... + 8977780.

It is an arithmetic number, because the mean of its divisors is an integer number (134665875).

Almost surely, 2^1005505144 is an apocalyptic number.

1005505144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1005505144 is an abundant number, since it is smaller than the sum of its proper divisors (1149148856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1005505144 is a wasteful number, since it uses less digits than its factorization.

1005505144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17955462 (or 17955458 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1005505144 is about 31709.7011023441. The cubic root of 1005505144 is about 1001.8316908601.

The spelling of 1005505144 in words is "one billion, five million, five hundred five thousand, one hundred forty-four".