1121554 has 8 divisors (see below), whose sum is σ = 1922688. Its totient is φ = 480660.

The previous prime is 1121543. The next prime is 1121557. The reversal of 1121554 is 4551211.

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1121557) 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, 40042 + ... + 40069.

It is an arithmetic number, because the mean of its divisors is an integer number (240336).

2^1121554 is an apocalyptic number.

1121554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1121554 is a deficient number, since it is larger than the sum of its proper divisors (801134).

1121554 is an equidigital number, since it uses as much as digits as its factorization.

1121554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80120.

The product of its digits is 200, while the sum is 19.

The square root of 1121554 is about 1059.0344659170. The cubic root of 1121554 is about 103.8978904104.

Adding to 1121554 its reverse (4551211), we get a palindrome (5672765).

The spelling of 1121554 in words is "one million, one hundred twenty-one thousand, five hundred fifty-four".