1227556 has 24 divisors (see below), whose sum is σ = 2447424. Its totient is φ = 533280.

The previous prime is 1227547. The next prime is 1227559. The reversal of 1227556 is 6557221.

1227556 = T₃₂₃ + T₃₂₄ + ... + T₃₄₄.

It is not an unprimeable number, because it can be changed into a prime (1227559) 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, 406 + ... + 1618.

It is an arithmetic number, because the mean of its divisors is an integer number (101976).

2^1227556 is an apocalyptic number.

It is an amenable number.

1227556 is a deficient number, since it is larger than the sum of its proper divisors (1219868).

1227556 is a wasteful number, since it uses less digits than its factorization.

1227556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251 (or 1249 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 1227556 is about 1107.9512624660. The cubic root of 1227556 is about 107.0731150785.

The spelling of 1227556 in words is "one million, two hundred twenty-seven thousand, five hundred fifty-six".