145208807 has 4 divisors (see below), whose sum is σ = 148585800. Its totient is φ = 141831816.

The previous prime is 145208797. The next prime is 145208837. The reversal of 145208807 is 708802541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 708802541 = 3931 ⋅180311.

It is a cyclic number.

It is not a de Polignac number, because 145208807 - 2²⁰ = 144160231 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 (145208837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688432 + ... + 1688517.

It is an arithmetic number, because the mean of its divisors is an integer number (37146450).

Almost surely, 2^145208807 is an apocalyptic number.

145208807 is a deficient number, since it is larger than the sum of its proper divisors (3376993).

145208807 is an equidigital number, since it uses as much as digits as its factorization.

145208807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376992.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 145208807 is about 12050.2616984031. The cubic root of 145208807 is about 525.6108469672.

The spelling of 145208807 in words is "one hundred forty-five million, two hundred eight thousand, eight hundred seven".