1000555204 has 12 divisors (see below), whose sum is σ = 1910150928. Its totient is φ = 454797800.

The previous prime is 1000555201. The next prime is 1000555207. The reversal of 1000555204 is 4025550001.

It is an interprime number because it is at equal distance from previous prime (1000555201) and next prime (1000555207).

It is a super-2 number, since 2×1000555204² = 2002221432502963232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1000555201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11369902 + ... + 11369989.

It is an arithmetic number, because the mean of its divisors is an integer number (159179244).

Almost surely, 2^1000555204 is an apocalyptic number.

It is an amenable number.

1000555204 is a deficient number, since it is larger than the sum of its proper divisors (909595724).

1000555204 is a wasteful number, since it uses less digits than its factorization.

1000555204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22739906 (or 22739904 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 1000555204 is about 31631.5539295811. The cubic root of 1000555204 is about 1000.1850337604.

The spelling of 1000555204 in words is "one billion, five hundred fifty-five thousand, two hundred four".