145201229 has 2 divisors, whose sum is σ = 145201230. Its totient is φ = 145201228.

The previous prime is 145201193. The next prime is 145201313. The reversal of 145201229 is 922102541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121044004 + 24157225 = 11002^2 + 4915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145201229 is a prime.

It is a super-2 number, since 2×145201229² = 42166793806220882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145201198 and 145201207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145201129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72600614 + 72600615.

It is an arithmetic number, because the mean of its divisors is an integer number (72600615).

Almost surely, 2^145201229 is an apocalyptic number.

It is an amenable number.

145201229 is a deficient number, since it is larger than the sum of its proper divisors (1).

145201229 is an equidigital number, since it uses as much as digits as its factorization.

145201229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 145201229 is about 12049.9472612954. The cubic root of 145201229 is about 525.6017034715.

The spelling of 145201229 in words is "one hundred forty-five million, two hundred one thousand, two hundred twenty-nine".