145216201 has 4 divisors (see below), whose sum is σ = 156386692. Its totient is φ = 134045712.

The previous prime is 145216177. The next prime is 145216241. The reversal of 145216201 is 102612541.

145216201 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.

It can be written as a sum of positive squares in 2 ways, for example, as 7974976 + 137241225 = 2824^2 + 11715^2 .

It is a cyclic number.

It is not a de Polignac number, because 145216201 - 2¹³ = 145208009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145216241) 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, 5585226 + ... + 5585251.

It is an arithmetic number, because the mean of its divisors is an integer number (39096673).

Almost surely, 2^145216201 is an apocalyptic number.

It is an amenable number.

145216201 is a deficient number, since it is larger than the sum of its proper divisors (11170491).

145216201 is a wasteful number, since it uses less digits than its factorization.

145216201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11170490.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 145216201 is about 12050.5684928139. The cubic root of 145216201 is about 525.6197681447.

Adding to 145216201 its reverse (102612541), we get a palindrome (247828742).

The spelling of 145216201 in words is "one hundred forty-five million, two hundred sixteen thousand, two hundred one".