1553223983 has 4 divisors (see below), whose sum is σ = 1553488560. Its totient is φ = 1552959408.

The previous prime is 1553223979. The next prime is 1553224019. The reversal of 1553223983 is 3893223551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3893223551 = 7 ⋅556174793.

It is a cyclic number.

It is not a de Polignac number, because 1553223983 - 2² = 1553223979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1553223983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553223953) 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, 123278 + ... + 135291.

It is an arithmetic number, because the mean of its divisors is an integer number (388372140).

Almost surely, 2^1553223983 is an apocalyptic number.

1553223983 is a deficient number, since it is larger than the sum of its proper divisors (264577).

1553223983 is an equidigital number, since it uses as much as digits as its factorization.

1553223983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264576.

The product of its digits is 194400, while the sum is 41.

The square root of 1553223983 is about 39410.9627261248. The cubic root of 1553223983 is about 1158.0963582277.

The spelling of 1553223983 in words is "one billion, five hundred fifty-three million, two hundred twenty-three thousand, nine hundred eighty-three".