146534521 has 4 divisors (see below), whose sum is σ = 167468032. Its totient is φ = 125601012.

The previous prime is 146534513. The next prime is 146534539. The reversal of 146534521 is 125435641.

It is a happy number.

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: 125435641 = 31 ⋅4046311.

It is a cyclic number.

It is not a de Polignac number, because 146534521 - 2³ = 146534513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146534221) 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, 10466745 + ... + 10466758.

It is an arithmetic number, because the mean of its divisors is an integer number (41867008).

Almost surely, 2^146534521 is an apocalyptic number.

It is an amenable number.

146534521 is a deficient number, since it is larger than the sum of its proper divisors (20933511).

146534521 is an equidigital number, since it uses as much as digits as its factorization.

146534521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20933510.

The product of its digits is 14400, while the sum is 31.

The square root of 146534521 is about 12105.1444022779. The cubic root of 146534521 is about 527.2055615190.

The spelling of 146534521 in words is "one hundred forty-six million, five hundred thirty-four thousand, five hundred twenty-one".