145407317 has 4 divisors (see below), whose sum is σ = 158626176. Its totient is φ = 132188460.

The previous prime is 145407293. The next prime is 145407343. The reversal of 145407317 is 713704541.

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 145407317 - 2¹⁰ = 145406293 is a prime.

It is a super-2 number, since 2×145407317² = 42286575674276978, 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 (145407217) 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, 6609413 + ... + 6609434.

It is an arithmetic number, because the mean of its divisors is an integer number (39656544).

Almost surely, 2^145407317 is an apocalyptic number.

It is an amenable number.

145407317 is a deficient number, since it is larger than the sum of its proper divisors (13218859).

145407317 is a wasteful number, since it uses less digits than its factorization.

145407317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13218858.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 145407317 is about 12058.4956358577. The cubic root of 145407317 is about 525.8502527842.

The spelling of 145407317 in words is "one hundred forty-five million, four hundred seven thousand, three hundred seventeen".