145503717 has 4 divisors (see below), whose sum is σ = 194004960. Its totient is φ = 97002476.

The previous prime is 145503713. The next prime is 145503719. The reversal of 145503717 is 717305541.

145503717 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 a cyclic number.

It is not a de Polignac number, because 145503717 - 2² = 145503713 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145503713) 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, 24250617 + ... + 24250622.

It is an arithmetic number, because the mean of its divisors is an integer number (48501240).

Almost surely, 2^145503717 is an apocalyptic number.

It is an amenable number.

145503717 is a deficient number, since it is larger than the sum of its proper divisors (48501243).

145503717 is an equidigital number, since it uses as much as digits as its factorization.

145503717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48501242.

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 145503717 is about 12062.4921554379. The cubic root of 145503717 is about 525.9664339301.

The spelling of 145503717 in words is "one hundred forty-five million, five hundred three thousand, seven hundred seventeen".