145038578 has 4 divisors (see below), whose sum is σ = 217557870. Its totient is φ = 72519288.

The previous prime is 145038521. The next prime is 145038589. The reversal of 145038578 is 875830541.

145038578 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 875830541 = 7699 ⋅113759.

It can be written as a sum of positive squares in only one way, i.e., 78730129 + 66308449 = 8873^2 + 8143^2 .

It is a Curzon number.

It is an unprimeable number.

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, 36259643 + ... + 36259646.

Almost surely, 2^145038578 is an apocalyptic number.

145038578 is a deficient number, since it is larger than the sum of its proper divisors (72519292).

145038578 is an equidigital number, since it uses as much as digits as its factorization.

145038578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72519291.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 145038578 is about 12043.1963365213. The cubic root of 145038578 is about 525.4053745922.

The spelling of 145038578 in words is "one hundred forty-five million, thirty-eight thousand, five hundred seventy-eight".