9954551 has 4 divisors (see below), whose sum is σ = 9975000. Its totient is φ = 9934104.

The previous prime is 9954547. The next prime is 9954583. The reversal of 9954551 is 1554599.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9954551 - 2² = 9954547 is a prime.

It is a super-2 number, since 2×9954551² = 198186171223202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9954521) 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, 9476 + ... + 10473.

It is an arithmetic number, because the mean of its divisors is an integer number (2493750).

Almost surely, 2^9954551 is an apocalyptic number.

9954551 is a deficient number, since it is larger than the sum of its proper divisors (20449).

9954551 is a wasteful number, since it uses less digits than its factorization.

9954551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20448.

The product of its digits is 40500, while the sum is 38.

The square root of 9954551 is about 3155.0833586452. The cubic root of 9954551 is about 215.1165836073.

The spelling of 9954551 in words is "nine million, nine hundred fifty-four thousand, five hundred fifty-one".