9158261 has 4 divisors (see below), whose sum is σ = 10466592. Its totient is φ = 7849932.

The previous prime is 9158251. The next prime is 9158263. The reversal of 9158261 is 1628519.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1628519 = 137 ⋅11887.

It is a cyclic number.

It is not a de Polignac number, because 9158261 - 2⁶ = 9158197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9158263) 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, 654155 + ... + 654168.

It is an arithmetic number, because the mean of its divisors is an integer number (2616648).

Almost surely, 2^9158261 is an apocalyptic number.

It is an amenable number.

9158261 is a deficient number, since it is larger than the sum of its proper divisors (1308331).

9158261 is a wasteful number, since it uses less digits than its factorization.

9158261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308330.

The product of its digits is 4320, while the sum is 32.

The square root of 9158261 is about 3026.2618855611. The cubic root of 9158261 is about 209.2205496718.

The spelling of 9158261 in words is "nine million, one hundred fifty-eight thousand, two hundred sixty-one".