145400201 has 4 divisors (see below), whose sum is σ = 153953172. Its totient is φ = 136847232.

The previous prime is 145400183. The next prime is 145400209. The reversal of 145400201 is 102004541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102004541 = 181 ⋅563561.

It can be written as a sum of positive squares in 2 ways, for example, as 86862400 + 58537801 = 9320^2 + 7651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145400201 is a prime.

It is a super-2 number, since 2×145400201² = 42282436901680802, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 8552953 = 145400201 / (1 + 4 + 5 + 4 + 0 + 0 + 2 + 0 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145400201.

It is not an unprimeable number, because it can be changed into a prime (145400209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4276460 + ... + 4276493.

It is an arithmetic number, because the mean of its divisors is an integer number (38488293).

Almost surely, 2^145400201 is an apocalyptic number.

It is an amenable number.

145400201 is a deficient number, since it is larger than the sum of its proper divisors (8552971).

145400201 is an equidigital number, since it uses as much as digits as its factorization.

145400201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8552970.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 145400201 is about 12058.2005705661. The cubic root of 145400201 is about 525.8416745560.

Adding to 145400201 its reverse (102004541), we get a palindrome (247404742).

The spelling of 145400201 in words is "one hundred forty-five million, four hundred thousand, two hundred one".