1220554 has 8 divisors (see below), whose sum is σ = 1836000. Its totient is φ = 608556.

The previous prime is 1220507. The next prime is 1220591. The reversal of 1220554 is 4550221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387 + ... + 1609.

It is an arithmetic number, because the mean of its divisors is an integer number (229500).

2^1220554 is an apocalyptic number.

1220554 is a deficient number, since it is larger than the sum of its proper divisors (615446).

1220554 is a wasteful number, since it uses less digits than its factorization.

1220554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1220554 is about 1104.7868572716. The cubic root of 1220554 is about 106.8691444873.

Adding to 1220554 its reverse (4550221), we get a palindrome (5770775).

The spelling of 1220554 in words is "one million, two hundred twenty thousand, five hundred fifty-four".