145867201 has 2 divisors, whose sum is σ = 145867202. Its totient is φ = 145867200.

The previous prime is 145867193. The next prime is 145867229. The reversal of 145867201 is 102768541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96530625 + 49336576 = 9825^2 + 7024^2 .

It is a cyclic number.

It is not a de Polignac number, because 145867201 - 2³ = 145867193 is a prime.

It is not a weakly prime, because it can be changed into another prime (145867231) 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 as a sum of consecutive naturals, namely, 72933600 + 72933601.

It is an arithmetic number, because the mean of its divisors is an integer number (72933601).

Almost surely, 2^145867201 is an apocalyptic number.

It is an amenable number.

145867201 is a deficient number, since it is larger than the sum of its proper divisors (1).

145867201 is an equidigital number, since it uses as much as digits as its factorization.

145867201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 145867201 is about 12077.5494617079. The cubic root of 145867201 is about 526.4040433863.

The spelling of 145867201 in words is "one hundred forty-five million, eight hundred sixty-seven thousand, two hundred one".