9978552 has 112 divisors (see below), whose sum is σ = 29511000. Its totient is φ = 3157056.

The previous prime is 9978547. The next prime is 9978557. The reversal of 9978552 is 2558799.

It is a happy number.

9978552 is a `hidden beast` number, since 9 + 97 + 8 + 552 = 666.

It is an interprime number because it is at equal distance from previous prime (9978547) and next prime (9978557).

Its product of digits (226800) is a multiple of the sum of its prime factors (112).

It is a junction number, because it is equal to n+sod(n) for n = 9978498 and 9978507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9978557) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 169099 + ... + 169157.

Almost surely, 2^9978552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9978552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14755500).

9978552 is an abundant number, since it is smaller than the sum of its proper divisors (19532448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9978552 is a wasteful number, since it uses less digits than its factorization.

9978552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 93 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 9978552 is about 3158.8846132773. The cubic root of 9978552 is about 215.2893310348.

The spelling of 9978552 in words is "nine million, nine hundred seventy-eight thousand, five hundred fifty-two".