145197212 has 24 divisors (see below), whose sum is σ = 258397776. Its totient is φ = 71378048.

The previous prime is 145197209. The next prime is 145197223. The reversal of 145197212 is 212791541.

It is a congruent number.

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, 76418 + ... + 78294.

It is an arithmetic number, because the mean of its divisors is an integer number (10766574).

Almost surely, 2^145197212 is an apocalyptic number.

It is an amenable number.

145197212 is a deficient number, since it is larger than the sum of its proper divisors (113200564).

145197212 is a wasteful number, since it uses less digits than its factorization.

145197212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197 (or 2195 counting only the distinct ones).

The product of its digits is 5040, while the sum is 32.

The square root of 145197212 is about 12049.7805789151. The cubic root of 145197212 is about 525.5968564935.

The spelling of 145197212 in words is "one hundred forty-five million, one hundred ninety-seven thousand, two hundred twelve".