145145791 has 6 divisors (see below), whose sum is σ = 168843120. Its totient is φ = 124410636.

The previous prime is 145145717. The next prime is 145145837. The reversal of 145145791 is 197541541.

It is not a de Polignac number, because 145145791 - 2¹¹ = 145143743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145145791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145145701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1481031 + ... + 1481128.

It is an arithmetic number, because the mean of its divisors is an integer number (28140520).

Almost surely, 2^145145791 is an apocalyptic number.

145145791 is a deficient number, since it is larger than the sum of its proper divisors (23697329).

145145791 is an equidigital number, since it uses as much as digits as its factorization.

145145791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2962173 (or 2962166 counting only the distinct ones).

The product of its digits is 25200, while the sum is 37.

The square root of 145145791 is about 12047.6466996671. The cubic root of 145145791 is about 525.5348031738.

The spelling of 145145791 in words is "one hundred forty-five million, one hundred forty-five thousand, seven hundred ninety-one".