145786961 has 2 divisors, whose sum is σ = 145786962. Its totient is φ = 145786960.

The previous prime is 145786957. The next prime is 145787009. The reversal of 145786961 is 169687541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93006736 + 52780225 = 9644^2 + 7265^2 .

It is an emirp because it is prime and its reverse (169687541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145786961 - 2² = 145786957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (145786931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72893480 + 72893481.

It is an arithmetic number, because the mean of its divisors is an integer number (72893481).

Almost surely, 2^145786961 is an apocalyptic number.

It is an amenable number.

145786961 is a deficient number, since it is larger than the sum of its proper divisors (1).

145786961 is an equidigital number, since it uses as much as digits as its factorization.

145786961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 145786961 is about 12074.2271388276. The cubic root of 145786961 is about 526.3075025886.

The spelling of 145786961 in words is "one hundred forty-five million, seven hundred eighty-six thousand, nine hundred sixty-one".