145012961 has 2 divisors, whose sum is σ = 145012962. Its totient is φ = 145012960.

The previous prime is 145012943. The next prime is 145012981. The reversal of 145012961 is 169210541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135862336 + 9150625 = 11656^2 + 3025^2 .

It is an emirp because it is prime and its reverse (169210541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145012961 - 2⁶ = 145012897 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (145012981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72506480 + 72506481.

It is an arithmetic number, because the mean of its divisors is an integer number (72506481).

Almost surely, 2^145012961 is an apocalyptic number.

It is an amenable number.

145012961 is a deficient number, since it is larger than the sum of its proper divisors (1).

145012961 is an equidigital number, since it uses as much as digits as its factorization.

145012961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 145012961 is about 12042.1327429986. The cubic root of 145012961 is about 525.3744400593.

The spelling of 145012961 in words is "one hundred forty-five million, twelve thousand, nine hundred sixty-one".