145182881 has 2 divisors, whose sum is σ = 145182882. Its totient is φ = 145182880.

The previous prime is 145182871. The next prime is 145182883. The reversal of 145182881 is 188281541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107972881 + 37210000 = 10391^2 + 6100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145182881 is a prime.

It is a super-2 number, since 2×145182881² = 42156137870920322, which contains 22 as substring.

Together with 145182883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145182883) 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, 72591440 + 72591441.

It is an arithmetic number, because the mean of its divisors is an integer number (72591441).

Almost surely, 2^145182881 is an apocalyptic number.

It is an amenable number.

145182881 is a deficient number, since it is larger than the sum of its proper divisors (1).

145182881 is an equidigital number, since it uses as much as digits as its factorization.

145182881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20480, while the sum is 38.

The square root of 145182881 is about 12049.1859061100. The cubic root of 145182881 is about 525.5795637455.

The spelling of 145182881 in words is "one hundred forty-five million, one hundred eighty-two thousand, eight hundred eighty-one".