145270187 has 2 divisors, whose sum is σ = 145270188. Its totient is φ = 145270186.

The previous prime is 145270171. The next prime is 145270249. The reversal of 145270187 is 781072541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145270187 - 2⁴ = 145270171 is a prime.

It is a super-2 number, since 2×145270187² = 42206854462029938, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (145270087) 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, 72635093 + 72635094.

It is an arithmetic number, because the mean of its divisors is an integer number (72635094).

Almost surely, 2^145270187 is an apocalyptic number.

145270187 is a deficient number, since it is larger than the sum of its proper divisors (1).

145270187 is an equidigital number, since it uses as much as digits as its factorization.

145270187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 145270187 is about 12052.8082619778. The cubic root of 145270187 is about 525.6848953893.

The spelling of 145270187 in words is "one hundred forty-five million, two hundred seventy thousand, one hundred eighty-seven".