146521 has 2 divisors, whose sum is σ = 146522.
Its totient is φ = 146520.
The previous prime is 146519. The next prime is 146527. The reversal of 146521 is 125641.
146521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 78400 + 68121 = 280^2 + 261^2
It is an emirp because it is prime and its reverse (125641) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 146521 - 21 = 146519 is a prime.
Together with 146519, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (146527) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73260 + 73261.
It is an arithmetic number, because the mean of its divisors is an integer number (73261).
2146521 is an apocalyptic number.
It is an amenable number.
146521 is a deficient number, since it is larger than the sum of its proper divisors (1).
146521 is an equidigital number, since it uses as much as digits as its factorization.
146521 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 240, while the sum is 19.
The square root of 146521 is about 382.7806160192.
The cubic root of 146521 is about 52.7189345623.
The spelling of 146521 in words is "one hundred forty-six thousand, five hundred twenty-one".