9146521 has 4 divisors (see below), whose sum is σ = 9180544. Its totient is φ = 9112500.

The previous prime is 9146509. The next prime is 9146539. The reversal of 9146521 is 1256419.

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: 1256419 = 17 ⋅73907.

It is a 5-Lehmer number, since φ(9146521) divides (9146521-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 9146521 - 2⁷ = 9146393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9146521.

It is not an unprimeable number, because it can be changed into a prime (9146591) 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, 16605 + ... + 17146.

It is an arithmetic number, because the mean of its divisors is an integer number (2295136).

Almost surely, 2^9146521 is an apocalyptic number.

It is an amenable number.

9146521 is a deficient number, since it is larger than the sum of its proper divisors (34023).

9146521 is a wasteful number, since it uses less digits than its factorization.

9146521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34022.

The product of its digits is 2160, while the sum is 28.

The square root of 9146521 is about 3024.3215768169. The cubic root of 9146521 is about 209.1311113108.

The spelling of 9146521 in words is "nine million, one hundred forty-six thousand, five hundred twenty-one".