145175538 has 16 divisors (see below), whose sum is σ = 294329376. Its totient is φ = 47728800.

The previous prime is 145175521. The next prime is 145175551. The reversal of 145175538 is 835571541.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 145175496 and 145175505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165288 + ... + 166163.

It is an arithmetic number, because the mean of its divisors is an integer number (18395586).

Almost surely, 2^145175538 is an apocalyptic number.

145175538 is an abundant number, since it is smaller than the sum of its proper divisors (149153838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145175538 is a wasteful number, since it uses less digits than its factorization.

145175538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331529.

The product of its digits is 84000, while the sum is 39.

The square root of 145175538 is about 12048.8811928743. The cubic root of 145175538 is about 525.5707027472.

The spelling of 145175538 in words is "one hundred forty-five million, one hundred seventy-five thousand, five hundred thirty-eight".