1001799556 has 12 divisors (see below), whose sum is σ = 1753395280. Its totient is φ = 500829480.

The previous prime is 1001799521. The next prime is 1001799559. The reversal of 1001799556 is 6559971001.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1001799559) 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, 27115 + ... + 52333.

Almost surely, 2^1001799556 is an apocalyptic number.

It is an amenable number.

1001799556 is a deficient number, since it is larger than the sum of its proper divisors (751595724).

1001799556 is a wasteful number, since it uses less digits than its factorization.

1001799556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35154 (or 35152 counting only the distinct ones).

The product of its (nonzero) digits is 85050, while the sum is 43.

The square root of 1001799556 is about 31651.2172909669. The cubic root of 1001799556 is about 1000.5994925369.

The spelling of 1001799556 in words is "one billion, one million, seven hundred ninety-nine thousand, five hundred fifty-six".