145534201 has 4 divisors (see below), whose sum is σ = 145638900. Its totient is φ = 145429504.

The previous prime is 145534189. The next prime is 145534223. The reversal of 145534201 is 102435541.

It is a happy number.

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 2755600 + 142778601 = 1660^2 + 11949^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145534201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145534261) 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, 50236 + ... + 53053.

It is an arithmetic number, because the mean of its divisors is an integer number (36409725).

Almost surely, 2^145534201 is an apocalyptic number.

It is an amenable number.

145534201 is a deficient number, since it is larger than the sum of its proper divisors (104699).

145534201 is a wasteful number, since it uses less digits than its factorization.

145534201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104698.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 145534201 is about 12063.7556755763. The cubic root of 145534201 is about 526.0031625249.

Adding to 145534201 its reverse (102435541), we get a palindrome (247969742).

The spelling of 145534201 in words is "one hundred forty-five million, five hundred thirty-four thousand, two hundred one".