1004201556 has 24 divisors (see below), whose sum is σ = 2346007104. Its totient is φ = 334323840.

The previous prime is 1004201533. The next prime is 1004201557. The reversal of 1004201556 is 6551024001.

It is a super-2 number, since 2×1004201556² = 2016841530145642272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004201557) 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, 40965 + ... + 60716.

It is an arithmetic number, because the mean of its divisors is an integer number (97750296).

Almost surely, 2^1004201556 is an apocalyptic number.

It is an amenable number.

1004201556 is an abundant number, since it is smaller than the sum of its proper divisors (1341805548).

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

1004201556 is a wasteful number, since it uses less digits than its factorization.

1004201556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102511 (or 102509 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1004201556 is about 31689.1394013785. The cubic root of 1004201556 is about 1001.3985617798.

Adding to 1004201556 its reverse (6551024001), we get a palindrome (7555225557).

The spelling of 1004201556 in words is "one billion, four million, two hundred one thousand, five hundred fifty-six".