145765241 has 2 divisors, whose sum is σ = 145765242. Its totient is φ = 145765240.

The previous prime is 145765231. The next prime is 145765253. The reversal of 145765241 is 142567541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80478841 + 65286400 = 8971^2 + 8080^2 .

It is a cyclic number.

It is not a de Polignac number, because 145765241 - 2¹⁴ = 145748857 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_8219276 and since 145765241 and 8219276 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (145765231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72882620 + 72882621.

It is an arithmetic number, because the mean of its divisors is an integer number (72882621).

Almost surely, 2^145765241 is an apocalyptic number.

It is an amenable number.

145765241 is a deficient number, since it is larger than the sum of its proper divisors (1).

145765241 is an equidigital number, since it uses as much as digits as its factorization.

145765241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 35.

The square root of 145765241 is about 12073.3276688741. The cubic root of 145765241 is about 526.2813640675.

The spelling of 145765241 in words is "one hundred forty-five million, seven hundred sixty-five thousand, two hundred forty-one".