145594201 has 4 divisors (see below), whose sum is σ = 147348432. Its totient is φ = 143839972.

The previous prime is 145594153. The next prime is 145594217. The reversal of 145594201 is 102495541.

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 145594201 - 2¹⁹ = 145069913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145594271) 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, 876991 + ... + 877156.

It is an arithmetic number, because the mean of its divisors is an integer number (36837108).

Almost surely, 2^145594201 is an apocalyptic number.

It is an amenable number.

145594201 is a deficient number, since it is larger than the sum of its proper divisors (1754231).

145594201 is an equidigital number, since it uses as much as digits as its factorization.

145594201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754230.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 145594201 is about 12066.2422070834. The cubic root of 145594201 is about 526.0754384421.

The spelling of 145594201 in words is "one hundred forty-five million, five hundred ninety-four thousand, two hundred one".