9151481 has 4 divisors (see below), whose sum is σ = 9199092. Its totient is φ = 9103872.

The previous prime is 9151459. The next prime is 9151507. The reversal of 9151481 is 1841519.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1638400 + 7513081 = 1280^2 + 2741^2 .

It is a cyclic number.

It is not a de Polignac number, because 9151481 - 2¹⁴ = 9135097 is a prime.

It is a super-2 number, since 2×9151481² = 167499208986722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9151411) 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, 23516 + ... + 23901.

It is an arithmetic number, because the mean of its divisors is an integer number (2299773).

Almost surely, 2^9151481 is an apocalyptic number.

It is an amenable number.

9151481 is a deficient number, since it is larger than the sum of its proper divisors (47611).

9151481 is a wasteful number, since it uses less digits than its factorization.

9151481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47610.

The product of its digits is 1440, while the sum is 29.

The square root of 9151481 is about 3025.1414842946. The cubic root of 9151481 is about 209.1689072067.

The spelling of 9151481 in words is "nine million, one hundred fifty-one thousand, four hundred eighty-one".