145938253 has 2 divisors, whose sum is σ = 145938254. Its totient is φ = 145938252.

The previous prime is 145938239. The next prime is 145938269. The reversal of 145938253 is 352839541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121947849 + 23990404 = 11043^2 + 4898^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145938253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145938223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72969126 + 72969127.

It is an arithmetic number, because the mean of its divisors is an integer number (72969127).

Almost surely, 2^145938253 is an apocalyptic number.

It is an amenable number.

145938253 is a deficient number, since it is larger than the sum of its proper divisors (1).

145938253 is an equidigital number, since it uses as much as digits as its factorization.

145938253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The square root of 145938253 is about 12080.4905943426. The cubic root of 145938253 is about 526.4895000863.

The spelling of 145938253 in words is "one hundred forty-five million, nine hundred thirty-eight thousand, two hundred fifty-three".