145004201 has 2 divisors, whose sum is σ = 145004202. Its totient is φ = 145004200.

The previous prime is 145004191. The next prime is 145004239. The reversal of 145004201 is 102400541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92064025 + 52940176 = 9595^2 + 7276^2 .

It is an emirp because it is prime and its reverse (102400541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145004201 - 2²² = 140809897 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145004201.

It is not a weakly prime, because it can be changed into another prime (145004291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72502100 + 72502101.

It is an arithmetic number, because the mean of its divisors is an integer number (72502101).

Almost surely, 2^145004201 is an apocalyptic number.

It is an amenable number.

145004201 is a deficient number, since it is larger than the sum of its proper divisors (1).

145004201 is an equidigital number, since it uses as much as digits as its factorization.

145004201 is an evil number, because the sum of its binary digits is even.

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

The square root of 145004201 is about 12041.7690145593. The cubic root of 145004201 is about 525.3638608377.

Adding to 145004201 its reverse (102400541), we get a palindrome (247404742).

The spelling of 145004201 in words is "one hundred forty-five million, four thousand, two hundred one".