145412273 has 2 divisors, whose sum is σ = 145412274. Its totient is φ = 145412272.

The previous prime is 145412269. The next prime is 145412287. The reversal of 145412273 is 372214541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78712384 + 66699889 = 8872^2 + 8167^2 .

It is a cyclic number.

It is not a de Polignac number, because 145412273 - 2² = 145412269 is a prime.

It is a super-2 number, since 2×145412273² = 42289458278053058, which contains 22 as substring.

It is a zygodrome in base 9.

It is not a weakly prime, because it can be changed into another prime (145412173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72706136 + 72706137.

It is an arithmetic number, because the mean of its divisors is an integer number (72706137).

Almost surely, 2^145412273 is an apocalyptic number.

It is an amenable number.

145412273 is a deficient number, since it is larger than the sum of its proper divisors (1).

145412273 is an equidigital number, since it uses as much as digits as its factorization.

145412273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 29.

The square root of 145412273 is about 12058.7011323774. The cubic root of 145412273 is about 525.8562270003.

The spelling of 145412273 in words is "one hundred forty-five million, four hundred twelve thousand, two hundred seventy-three".