145182685 has 4 divisors (see below), whose sum is σ = 174219228. Its totient is φ = 116146144.

The previous prime is 145182673. The next prime is 145182689. The reversal of 145182685 is 586281541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43797924 + 101384761 = 6618^2 + 10069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145182685 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145182689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14518264 + ... + 14518273.

It is an arithmetic number, because the mean of its divisors is an integer number (43554807).

Almost surely, 2^145182685 is an apocalyptic number.

It is an amenable number.

145182685 is a deficient number, since it is larger than the sum of its proper divisors (29036543).

145182685 is an equidigital number, since it uses as much as digits as its factorization.

145182685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29036542.

The product of its digits is 76800, while the sum is 40.

The square root of 145182685 is about 12049.1777727777. The cubic root of 145182685 is about 525.5793272308.

The spelling of 145182685 in words is "one hundred forty-five million, one hundred eighty-two thousand, six hundred eighty-five".