145299017 has 8 divisors (see below), whose sum is σ = 154699272. Its totient is φ = 135993600.

The previous prime is 145299013. The next prime is 145299029. The reversal of 145299017 is 710992541.

It can be written as a sum of positive squares in 4 ways, for example, as 241081 + 145057936 = 491^2 + 12044^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145299017 - 2² = 145299013 is a prime.

It is a super-2 number, since 2×145299017² = 42223608682332578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145299013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20534 + ... + 26687.

It is an arithmetic number, because the mean of its divisors is an integer number (19337409).

Almost surely, 2^145299017 is an apocalyptic number.

145299017 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

145299017 is a deficient number, since it is larger than the sum of its proper divisors (9400255).

145299017 is a wasteful number, since it uses less digits than its factorization.

145299017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47419.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 145299017 is about 12054.0041894799. The cubic root of 145299017 is about 525.7196685096.

The spelling of 145299017 in words is "one hundred forty-five million, two hundred ninety-nine thousand, seventeen".