9801550 has 48 divisors (see below), whose sum is σ = 20248704. Its totient is φ = 3500000.

The previous prime is 9801527. The next prime is 9801557. The reversal of 9801550 is 551089.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9801557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38925 + ... + 39175.

It is an arithmetic number, because the mean of its divisors is an integer number (421848).

Almost surely, 2^9801550 is an apocalyptic number.

9801550 is an abundant number, since it is smaller than the sum of its proper divisors (10447154).

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

9801550 is a wasteful number, since it uses less digits than its factorization.

9801550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 9801550 is about 3130.7427233805. The cubic root of 9801550 is about 214.0087776992.

The spelling of 9801550 in words is "nine million, eight hundred one thousand, five hundred fifty".