1156556 has 6 divisors (see below), whose sum is σ = 2023980. Its totient is φ = 578276.

The previous prime is 1156553. The next prime is 1156567. The reversal of 1156556 is 6556511.

It is a super-2 number, since 2×1156556² = 2675243562272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1156553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144566 + ... + 144573.

It is an arithmetic number, because the mean of its divisors is an integer number (337330).

2^1156556 is an apocalyptic number.

It is an amenable number.

1156556 is a deficient number, since it is larger than the sum of its proper divisors (867424).

1156556 is a wasteful number, since it uses less digits than its factorization.

1156556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289143 (or 289141 counting only the distinct ones).

The product of its digits is 4500, while the sum is 29.

The square root of 1156556 is about 1075.4329360774. The cubic root of 1156556 is about 104.9676695624.

The spelling of 1156556 in words is "one million, one hundred fifty-six thousand, five hundred fifty-six".