145070561 has 2 divisors, whose sum is σ = 145070562. Its totient is φ = 145070560.

The previous prime is 145070551. The next prime is 145070609. The reversal of 145070561 is 165070541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127690000 + 17380561 = 11300^2 + 4169^2 .

It is a cyclic number.

It is not a de Polignac number, because 145070561 - 2¹⁰ = 145069537 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 (145070501) 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, 72535280 + 72535281.

It is an arithmetic number, because the mean of its divisors is an integer number (72535281).

Almost surely, 2^145070561 is an apocalyptic number.

It is an amenable number.

145070561 is a deficient number, since it is larger than the sum of its proper divisors (1).

145070561 is an equidigital number, since it uses as much as digits as its factorization.

145070561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 145070561 is about 12044.5241084901. The cubic root of 145070561 is about 525.4439914561.

The spelling of 145070561 in words is "one hundred forty-five million, seventy thousand, five hundred sixty-one".