1012403553 has 24 divisors (see below), whose sum is σ = 1573391520. Its totient is φ = 577362240.

The previous prime is 1012403527. The next prime is 1012403573. The reversal of 1012403553 is 3553042101.

It is not a de Polignac number, because 1012403553 - 2⁵ = 1012403521 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1012403503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69978 + ... + 83196.

It is an arithmetic number, because the mean of its divisors is an integer number (65557980).

Almost surely, 2^1012403553 is an apocalyptic number.

It is an amenable number.

1012403553 is a deficient number, since it is larger than the sum of its proper divisors (560987967).

1012403553 is a wasteful number, since it uses less digits than its factorization.

1012403553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13757 (or 13750 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1012403553 is about 31818.2895989084. The cubic root of 1012403553 is about 1004.1175402591.

Adding to 1012403553 its reverse (3553042101), we get a palindrome (4565445654).

The spelling of 1012403553 in words is "one billion, twelve million, four hundred three thousand, five hundred fifty-three".