9973553 has 4 divisors (see below), whose sum is σ = 10122480. Its totient is φ = 9824628.

The previous prime is 9973547. The next prime is 9973567. The reversal of 9973553 is 3553799.

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.

It is a cyclic number.

It is not a de Polignac number, because 9973553 - 2⁶ = 9973489 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 9973553.

It is not an unprimeable number, because it can be changed into a prime (9973153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74363 + ... + 74496.

It is an arithmetic number, because the mean of its divisors is an integer number (2530620).

Almost surely, 2^9973553 is an apocalyptic number.

It is an amenable number.

9973553 is a deficient number, since it is larger than the sum of its proper divisors (148927).

9973553 is a wasteful number, since it uses less digits than its factorization.

9973553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148926.

The product of its digits is 127575, while the sum is 41.

The square root of 9973553 is about 3158.0932538480. The cubic root of 9973553 is about 215.2533735419.

The spelling of 9973553 in words is "nine million, nine hundred seventy-three thousand, five hundred fifty-three".