9997554 has 16 divisors (see below), whose sum is σ = 22851648. Its totient is φ = 2856432.

The previous prime is 9997523. The next prime is 9997573. The reversal of 9997554 is 4557999.

It is a nialpdrome in base 10.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 118977 + ... + 119060.

It is an arithmetic number, because the mean of its divisors is an integer number (1428228).

Almost surely, 2^9997554 is an apocalyptic number.

9997554 is an abundant number, since it is smaller than the sum of its proper divisors (12854094).

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

9997554 is a wasteful number, since it uses less digits than its factorization.

9997554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238049.

The product of its digits is 510300, while the sum is 48.

The square root of 9997554 is about 3161.8908899581. The cubic root of 9997554 is about 215.4259017466.

The spelling of 9997554 in words is "nine million, nine hundred ninety-seven thousand, five hundred fifty-four".