9121481 has 4 divisors (see below), whose sum is σ = 9127572. Its totient is φ = 9115392.

The previous prime is 9121439. The next prime is 9121493. The reversal of 9121481 is 1841219.

9121481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4477456 + 4644025 = 2116^2 + 2155^2 .

It is a cyclic number.

It is not a de Polignac number, because 9121481 - 2²² = 4927177 is a prime.

It is a super-2 number, since 2×9121481² = 166402831266722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9121481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9121081) 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, 941 + ... + 4373.

It is an arithmetic number, because the mean of its divisors is an integer number (2281893).

Almost surely, 2^9121481 is an apocalyptic number.

It is an amenable number.

9121481 is a deficient number, since it is larger than the sum of its proper divisors (6091).

9121481 is a wasteful number, since it uses less digits than its factorization.

9121481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6090.

The product of its digits is 576, while the sum is 26.

The square root of 9121481 is about 3020.1789682070. The cubic root of 9121481 is about 208.9400940919.

The spelling of 9121481 in words is "nine million, one hundred twenty-one thousand, four hundred eighty-one".