1013556 has 12 divisors (see below), whose sum is σ = 2364992. Its totient is φ = 337848.

The previous prime is 1013533. The next prime is 1013563. The reversal of 1013556 is 6553101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 42220 + ... + 42243.

2^1013556 is an apocalyptic number.

It is an amenable number.

1013556 is an abundant number, since it is smaller than the sum of its proper divisors (1351436).

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

1013556 is a wasteful number, since it uses less digits than its factorization.

1013556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84470 (or 84468 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1013556 is about 1006.7551837463. The cubic root of 1013556 is about 100.4498400715.

Adding to 1013556 its reverse (6553101), we get a palindrome (7566657).

The spelling of 1013556 in words is "one million, thirteen thousand, five hundred fifty-six".