1005521423 has 8 divisors (see below), whose sum is σ = 1065556800. Its totient is φ = 945584640.

The previous prime is 1005521393. The next prime is 1005521441. The reversal of 1005521423 is 3241255001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1005521423 - 2¹⁶ = 1005455887 is a prime.

It is a super-2 number, since 2×1005521423² = 2022146664223889858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005521443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3098 + ... + 44951.

It is an arithmetic number, because the mean of its divisors is an integer number (133194600).

Almost surely, 2^1005521423 is an apocalyptic number.

1005521423 is a deficient number, since it is larger than the sum of its proper divisors (60035377).

1005521423 is a wasteful number, since it uses less digits than its factorization.

1005521423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49297.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1005521423 is about 31709.9577893128. The cubic root of 1005521423 is about 1001.8370973400.

Adding to 1005521423 its reverse (3241255001), we get a palindrome (4246776424).

The spelling of 1005521423 in words is "one billion, five million, five hundred twenty-one thousand, four hundred twenty-three".