1005406552 has 32 divisors (see below), whose sum is σ = 1907942400. Its totient is φ = 496641024.

The previous prime is 1005406547. The next prime is 1005406573. The reversal of 1005406552 is 2556045001.

It is a self number, because there is not a number n which added to its sum of digits gives 1005406552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785449 + ... + 786727.

It is an arithmetic number, because the mean of its divisors is an integer number (59623200).

Almost surely, 2^1005406552 is an apocalyptic number.

It is an amenable number.

1005406552 is a deficient number, since it is larger than the sum of its proper divisors (902535848).

1005406552 is a wasteful number, since it uses less digits than its factorization.

1005406552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395 (or 2391 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1005406552 is about 31708.1464611226. The cubic root of 1005406552 is about 1001.7989458532.

The spelling of 1005406552 in words is "one billion, five million, four hundred six thousand, five hundred fifty-two".