145270709 has 2 divisors, whose sum is σ = 145270710. Its totient is φ = 145270708.

The previous prime is 145270669. The next prime is 145270717. The reversal of 145270709 is 907072541.

145270709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94148209 + 51122500 = 9703^2 + 7150^2 .

It is an emirp because it is prime and its reverse (907072541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145270709 - 2²⁴ = 128493493 is a prime.

It is a super-2 number, since 2×145270709² = 42207157786725362, which contains 22 as substring.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145270739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72635354 + 72635355.

It is an arithmetic number, because the mean of its divisors is an integer number (72635355).

Almost surely, 2^145270709 is an apocalyptic number.

It is an amenable number.

145270709 is a deficient number, since it is larger than the sum of its proper divisors (1).

145270709 is an equidigital number, since it uses as much as digits as its factorization.

145270709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 145270709 is about 12052.8299166627. The cubic root of 145270709 is about 525.6855250372.

The spelling of 145270709 in words is "one hundred forty-five million, two hundred seventy thousand, seven hundred nine".