983553 has 4 divisors (see below), whose sum is σ = 1311408. Its totient is φ = 655700.

The previous prime is 983533. The next prime is 983557. The reversal of 983553 is 355389.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 355389 = 3 ⋅118463.

It is a cyclic number.

It is not a de Polignac number, because 983553 - 2¹² = 979457 is a prime.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (983557) 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, 163923 + ... + 163928.

It is an arithmetic number, because the mean of its divisors is an integer number (327852).

2⁹⁸³⁵⁵³ is an apocalyptic number.

It is an amenable number.

983553 is a deficient number, since it is larger than the sum of its proper divisors (327855).

983553 is a wasteful number, since it uses less digits than its factorization.

983553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327854.

The product of its digits is 16200, while the sum is 33.

The square root of 983553 is about 991.7424060713. The cubic root of 983553 is about 99.4487333012.

The spelling of 983553 in words is "nine hundred eighty-three thousand, five hundred fifty-three".