1005400052 has 6 divisors (see below), whose sum is σ = 1759450098. Its totient is φ = 502700024.

The previous prime is 1005400051. The next prime is 1005400079. The reversal of 1005400052 is 2500045001.

It can be written as a sum of positive squares in only one way, i.e., 822771856 + 182628196 = 28684^2 + 13514^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1005400052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005400051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125675003 + ... + 125675010.

It is an arithmetic number, because the mean of its divisors is an integer number (293241683).

Almost surely, 2^1005400052 is an apocalyptic number.

It is an amenable number.

1005400052 is a deficient number, since it is larger than the sum of its proper divisors (754050046).

1005400052 is a wasteful number, since it uses less digits than its factorization.

1005400052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251350017 (or 251350015 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1005400052 is about 31708.0439636380. The cubic root of 1005400052 is about 1001.7967869564.

Adding to 1005400052 its reverse (2500045001), we get a palindrome (3505445053).

The spelling of 1005400052 in words is "one billion, five million, four hundred thousand, fifty-two".