145664452 has 12 divisors (see below), whose sum is σ = 258503616. Its totient is φ = 71806280.

The previous prime is 145664447. The next prime is 145664471. The reversal of 145664452 is 254466541.

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 3 ways as a sum of consecutive naturals, for example, 256168 + ... + 256735.

It is an arithmetic number, because the mean of its divisors is an integer number (21541968).

Almost surely, 2^145664452 is an apocalyptic number.

It is an amenable number.

145664452 is a deficient number, since it is larger than the sum of its proper divisors (112839164).

145664452 is a wasteful number, since it uses less digits than its factorization.

145664452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512978 (or 512976 counting only the distinct ones).

The product of its digits is 115200, while the sum is 37.

The square root of 145664452 is about 12069.1529114516. The cubic root of 145664452 is about 526.1600374688.

The spelling of 145664452 in words is "one hundred forty-five million, six hundred sixty-four thousand, four hundred fifty-two".