145761361 has 2 divisors, whose sum is σ = 145761362. Its totient is φ = 145761360.

The previous prime is 145761359. The next prime is 145761397. The reversal of 145761361 is 163167541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145564225 + 197136 = 12065^2 + 444^2 .

It is a cyclic number.

It is not a de Polignac number, because 145761361 - 2¹ = 145761359 is a prime.

Together with 145761359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145761461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72880680 + 72880681.

It is an arithmetic number, because the mean of its divisors is an integer number (72880681).

Almost surely, 2^145761361 is an apocalyptic number.

It is an amenable number.

145761361 is a deficient number, since it is larger than the sum of its proper divisors (1).

145761361 is an equidigital number, since it uses as much as digits as its factorization.

145761361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 145761361 is about 12073.1669830248. The cubic root of 145761361 is about 526.2766944819.

The spelling of 145761361 in words is "one hundred forty-five million, seven hundred sixty-one thousand, three hundred sixty-one".