146444257 has 2 divisors, whose sum is σ = 146444258. Its totient is φ = 146444256.

The previous prime is 146444227. The next prime is 146444269. The reversal of 146444257 is 752444641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146023056 + 421201 = 12084^2 + 649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146444257 is a prime.

It is not a weakly prime, because it can be changed into another prime (146444227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73222128 + 73222129.

It is an arithmetic number, because the mean of its divisors is an integer number (73222129).

Almost surely, 2^146444257 is an apocalyptic number.

It is an amenable number.

146444257 is a deficient number, since it is larger than the sum of its proper divisors (1).

146444257 is an equidigital number, since it uses as much as digits as its factorization.

146444257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 37.

The square root of 146444257 is about 12101.4154957178. The cubic root of 146444257 is about 527.0972879258.

Adding to 146444257 its reverse (752444641), we get a palindrome (898888898).

The spelling of 146444257 in words is "one hundred forty-six million, four hundred forty-four thousand, two hundred fifty-seven".