145472517 has 10 divisors (see below), whose sum is σ = 217310918. Its totient is φ = 96981624.

The previous prime is 145472501. The next prime is 145472521. The reversal of 145472517 is 715274541.

It can be written as a sum of positive squares in only one way, i.e., 89132481 + 56340036 = 9441^2 + 7506^2 .

It is not a de Polignac number, because 145472517 - 2⁴ = 145472501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145472557) 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 in 9 ways as a sum of consecutive naturals, for example, 897898 + ... + 898059.

Almost surely, 2^145472517 is an apocalyptic number.

It is an amenable number.

145472517 is a deficient number, since it is larger than the sum of its proper divisors (71838401).

145472517 is an equidigital number, since it uses as much as digits as its factorization.

145472517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795969 (or 1795960 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 145472517 is about 12061.1988210128. The cubic root of 145472517 is about 525.9288373515.

The spelling of 145472517 in words is "one hundred forty-five million, four hundred seventy-two thousand, five hundred seventeen".