145134251 has 2 divisors, whose sum is σ = 145134252. Its totient is φ = 145134250.

The previous prime is 145134247. The next prime is 145134257. The reversal of 145134251 is 152431541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145134251 - 2² = 145134247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145134251.

It is not a weakly prime, because it can be changed into another prime (145134257) 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, 72567125 + 72567126.

It is an arithmetic number, because the mean of its divisors is an integer number (72567126).

Almost surely, 2^145134251 is an apocalyptic number.

145134251 is a deficient number, since it is larger than the sum of its proper divisors (1).

145134251 is an equidigital number, since it uses as much as digits as its factorization.

145134251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 26.

The square root of 145134251 is about 12047.1677584402. The cubic root of 145134251 is about 525.5208750345.

Adding to 145134251 its reverse (152431541), we get a palindrome (297565792).

The spelling of 145134251 in words is "one hundred forty-five million, one hundred thirty-four thousand, two hundred fifty-one".