145175212 has 24 divisors (see below), whose sum is σ = 312685856. Its totient is φ = 57431808.

The previous prime is 145175207. The next prime is 145175221. The reversal of 145175212 is 212571541.

It is a Harshad number since it is a multiple of its sum of digits (28).

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 in 7 ways as a sum of consecutive naturals, for example, 199053 + ... + 199780.

Almost surely, 2^145175212 is an apocalyptic number.

It is an amenable number.

145175212 is an abundant number, since it is smaller than the sum of its proper divisors (167510644).

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

145175212 is a wasteful number, since it uses less digits than its factorization.

145175212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398857 (or 398855 counting only the distinct ones).

The product of its digits is 2800, while the sum is 28.

The square root of 145175212 is about 12048.8676646397. The cubic root of 145175212 is about 525.5703093471.

The spelling of 145175212 in words is "one hundred forty-five million, one hundred seventy-five thousand, two hundred twelve".