145338717 has 4 divisors (see below), whose sum is σ = 193784960. Its totient is φ = 96892476.

The previous prime is 145338703. The next prime is 145338731. The reversal of 145338717 is 717833541.

145338717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (145338703) and next prime (145338731).

It is not a de Polignac number, because 145338717 - 2¹¹ = 145336669 is a prime.

It is a super-2 number, since 2×145338717² = 42246685318412178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145338737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24223117 + ... + 24223122.

It is an arithmetic number, because the mean of its divisors is an integer number (48446240).

Almost surely, 2^145338717 is an apocalyptic number.

It is an amenable number.

145338717 is a deficient number, since it is larger than the sum of its proper divisors (48446243).

145338717 is an equidigital number, since it uses as much as digits as its factorization.

145338717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48446242.

The product of its digits is 70560, while the sum is 39.

The square root of 145338717 is about 12055.6508327008. The cubic root of 145338717 is about 525.7675448837.

The spelling of 145338717 in words is "one hundred forty-five million, three hundred thirty-eight thousand, seven hundred seventeen".