145261147 has 2 divisors, whose sum is σ = 145261148. Its totient is φ = 145261146.

The previous prime is 145261121. The next prime is 145261183. The reversal of 145261147 is 741162541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145261147 - 2⁷ = 145261019 is a prime.

It is a super-5 number, since 5×145261147⁵ (a number of 42 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (145261247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72630573 + 72630574.

It is an arithmetic number, because the mean of its divisors is an integer number (72630574).

Almost surely, 2^145261147 is an apocalyptic number.

145261147 is a deficient number, since it is larger than the sum of its proper divisors (1).

145261147 is an equidigital number, since it uses as much as digits as its factorization.

145261147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The square root of 145261147 is about 12052.4332398068. The cubic root of 145261147 is about 525.6739909036.

The spelling of 145261147 in words is "one hundred forty-five million, two hundred sixty-one thousand, one hundred forty-seven".