9975553 has 4 divisors (see below), whose sum is σ = 11400640. Its totient is φ = 8550468.

The previous prime is 9975547. The next prime is 9975569. The reversal of 9975553 is 3555799.

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 a de Polignac number, because none of the positive numbers 2^k-9975553 is a prime.

It is a super-4 number, since 4×9975553⁴ (a number of 29 digits) contains 4444 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9975593) 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, 712533 + ... + 712546.

It is an arithmetic number, because the mean of its divisors is an integer number (2850160).

Almost surely, 2^9975553 is an apocalyptic number.

It is an amenable number.

9975553 is a deficient number, since it is larger than the sum of its proper divisors (1425087).

9975553 is a wasteful number, since it uses less digits than its factorization.

9975553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425086.

The product of its digits is 212625, while the sum is 43.

The square root of 9975553 is about 3158.4098847363. The cubic root of 9975553 is about 215.2677608578.

It can be divided in two parts, 99 and 75553, that multiplied together give a palindrome (7479747).

The spelling of 9975553 in words is "nine million, nine hundred seventy-five thousand, five hundred fifty-three".