145582277 has 2 divisors, whose sum is σ = 145582278. Its totient is φ = 145582276.

The previous prime is 145582243. The next prime is 145582279. The reversal of 145582277 is 772285541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117375556 + 28206721 = 10834^2 + 5311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145582277 is a prime.

Together with 145582279, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145582279) 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, 72791138 + 72791139.

It is an arithmetic number, because the mean of its divisors is an integer number (72791139).

Almost surely, 2^145582277 is an apocalyptic number.

It is an amenable number.

145582277 is a deficient number, since it is larger than the sum of its proper divisors (1).

145582277 is an equidigital number, since it uses as much as digits as its factorization.

145582277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 156800, while the sum is 41.

The square root of 145582277 is about 12065.7480911877. The cubic root of 145582277 is about 526.0610763894.

The spelling of 145582277 in words is "one hundred forty-five million, five hundred eighty-two thousand, two hundred seventy-seven".