9215481 has 24 divisors (see below), whose sum is σ = 13789440. Its totient is φ = 5468320.

The previous prime is 9215477. The next prime is 9215483. The reversal of 9215481 is 1845129.

It is a happy number.

It is not a de Polignac number, because 9215481 - 2² = 9215477 is a prime.

It is a super-2 number, since 2×9215481² = 169850180122722, which contains 22 as substring.

9215481 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9215483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19000 + ... + 19478.

It is an arithmetic number, because the mean of its divisors is an integer number (574560).

Almost surely, 2^9215481 is an apocalyptic number.

It is an amenable number.

9215481 is a deficient number, since it is larger than the sum of its proper divisors (4573959).

9215481 is a wasteful number, since it uses less digits than its factorization.

9215481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 546 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 9215481 is about 3035.7010722402. The cubic root of 9215481 is about 209.6553758008.

It can be divided in two parts, 92154 and 81, that added together give a triangular number (92235 = T₄₂₉).

The spelling of 9215481 in words is "nine million, two hundred fifteen thousand, four hundred eighty-one".