146057321 has 2 divisors, whose sum is σ = 146057322. Its totient is φ = 146057320.

The previous prime is 146057309. The next prime is 146057323. The reversal of 146057321 is 123750641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139240000 + 6817321 = 11800^2 + 2611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146057321 is a prime.

Together with 146057323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (146057323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73028660 + 73028661.

It is an arithmetic number, because the mean of its divisors is an integer number (73028661).

Almost surely, 2^146057321 is an apocalyptic number.

It is an amenable number.

146057321 is a deficient number, since it is larger than the sum of its proper divisors (1).

146057321 is an equidigital number, since it uses as much as digits as its factorization.

146057321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 146057321 is about 12085.4177006837. The cubic root of 146057321 is about 526.6326451256.

The spelling of 146057321 in words is "one hundred forty-six million, fifty-seven thousand, three hundred twenty-one".