1121253554 has 16 divisors (see below), whose sum is σ = 1688039808. Its totient is φ = 558578592.

The previous prime is 1121253541. The next prime is 1121253577. The reversal of 1121253554 is 4553521211.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1196174 + ... + 1197110.

It is an arithmetic number, because the mean of its divisors is an integer number (105502488).

Almost surely, 2^1121253554 is an apocalyptic number.

1121253554 is a deficient number, since it is larger than the sum of its proper divisors (566786254).

1121253554 is an equidigital number, since it uses as much as digits as its factorization.

1121253554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489.

The product of its digits is 6000, while the sum is 29.

The square root of 1121253554 is about 33485.1243688895. The cubic root of 1121253554 is about 1038.8861206587.

Adding to 1121253554 its reverse (4553521211), we get a palindrome (5674774765).

The spelling of 1121253554 in words is "one billion, one hundred twenty-one million, two hundred fifty-three thousand, five hundred fifty-four".