145275187 has 2 divisors, whose sum is σ = 145275188. Its totient is φ = 145275186.

The previous prime is 145275139. The next prime is 145275203. The reversal of 145275187 is 781572541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145275187 - 2¹⁹ = 144750899 is a prime.

It is a super-2 number, since 2×145275187² = 42209759915769938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145275127) 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, 72637593 + 72637594.

It is an arithmetic number, because the mean of its divisors is an integer number (72637594).

Almost surely, 2^145275187 is an apocalyptic number.

145275187 is a deficient number, since it is larger than the sum of its proper divisors (1).

145275187 is an equidigital number, since it uses as much as digits as its factorization.

145275187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78400, while the sum is 40.

The square root of 145275187 is about 12053.0156807332. The cubic root of 145275187 is about 525.6909264371.

The spelling of 145275187 in words is "one hundred forty-five million, two hundred seventy-five thousand, one hundred eighty-seven".