145508207 has 4 divisors (see below), whose sum is σ = 156701160. Its totient is φ = 134315256.

The previous prime is 145508197. The next prime is 145508227. The reversal of 145508207 is 702805541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 702805541 = 1993 ⋅352637.

It is a cyclic number.

It is not a de Polignac number, because 145508207 - 2⁴ = 145508191 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 (145508227) 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, 5596457 + ... + 5596482.

It is an arithmetic number, because the mean of its divisors is an integer number (39175290).

Almost surely, 2^145508207 is an apocalyptic number.

145508207 is a deficient number, since it is larger than the sum of its proper divisors (11192953).

145508207 is a wasteful number, since it uses less digits than its factorization.

145508207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11192952.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 145508207 is about 12062.6782681128. The cubic root of 145508207 is about 525.9718440210.

The spelling of 145508207 in words is "one hundred forty-five million, five hundred eight thousand, two hundred seven".