145439075 has 6 divisors (see below), whose sum is σ = 180344484. Its totient is φ = 116351240.

The previous prime is 145439069. The next prime is 145439087. The reversal of 145439075 is 570934541.

145439075 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145439075 - 2⁸ = 145438819 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2908757 + ... + 2908806.

It is an arithmetic number, because the mean of its divisors is an integer number (30057414).

Almost surely, 2^145439075 is an apocalyptic number.

145439075 is a deficient number, since it is larger than the sum of its proper divisors (34905409).

145439075 is an equidigital number, since it uses as much as digits as its factorization.

145439075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5817573 (or 5817568 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 145439075 is about 12059.8123948924. The cubic root of 145439075 is about 525.8885331518. Note that the first 3 decimals are identical.

The spelling of 145439075 in words is "one hundred forty-five million, four hundred thirty-nine thousand, seventy-five".