1099556 has 6 divisors (see below), whose sum is σ = 1924230. Its totient is φ = 549776.

The previous prime is 1099547. The next prime is 1099559. The reversal of 1099556 is 6559901.

It can be written as a sum of positive squares in only one way, i.e., 1081600 + 17956 = 1040^2 + 134^2 .

It is not an unprimeable number, because it can be changed into a prime (1099559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137441 + ... + 137448.

It is an arithmetic number, because the mean of its divisors is an integer number (320705).

2^1099556 is an apocalyptic number.

It is an amenable number.

1099556 is a deficient number, since it is larger than the sum of its proper divisors (824674).

1099556 is a wasteful number, since it uses less digits than its factorization.

1099556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274893 (or 274891 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 1099556 is about 1048.5971581117. The cubic root of 1099556 is about 103.2141208168.

The spelling of 1099556 in words is "one million, ninety-nine thousand, five hundred fifty-six".