145112501 has 2 divisors, whose sum is σ = 145112502. Its totient is φ = 145112500.

The previous prime is 145112449. The next prime is 145112503. The reversal of 145112501 is 105211541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127464100 + 17648401 = 11290^2 + 4201^2 .

It is an emirp because it is prime and its reverse (105211541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145112501 is a prime.

Together with 145112503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145112503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72556250 + 72556251.

It is an arithmetic number, because the mean of its divisors is an integer number (72556251).

Almost surely, 2^145112501 is an apocalyptic number.

It is an amenable number.

145112501 is a deficient number, since it is larger than the sum of its proper divisors (1).

145112501 is an equidigital number, since it uses as much as digits as its factorization.

145112501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 145112501 is about 12046.2650228193. The cubic root of 145112501 is about 525.4946219850.

The spelling of 145112501 in words is "one hundred forty-five million, one hundred twelve thousand, five hundred one".