9157081 has 4 divisors (see below), whose sum is σ = 9229312. Its totient is φ = 9084852.

The previous prime is 9157073. The next prime is 9157087. The reversal of 9157081 is 1807519.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9157081 - 2³ = 9157073 is a prime.

It is a super-2 number, since 2×9157081² = 167704264881122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9157087) 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, 35925 + ... + 36178.

It is an arithmetic number, because the mean of its divisors is an integer number (2307328).

Almost surely, 2^9157081 is an apocalyptic number.

It is an amenable number.

9157081 is a deficient number, since it is larger than the sum of its proper divisors (72231).

9157081 is a wasteful number, since it uses less digits than its factorization.

9157081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72230.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 9157081 is about 3026.0669192865. The cubic root of 9157081 is about 209.2115635825.

The spelling of 9157081 in words is "nine million, one hundred fifty-seven thousand, eighty-one".