145323512 has 8 divisors (see below), whose sum is σ = 272481600. Its totient is φ = 72661752.

The previous prime is 145323511. The next prime is 145323523. The reversal of 145323512 is 215323541.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×145323512² = 42237846280028288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145323511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9082712 + ... + 9082727.

It is an arithmetic number, because the mean of its divisors is an integer number (34060200).

Almost surely, 2^145323512 is an apocalyptic number.

It is an amenable number.

145323512 is a deficient number, since it is larger than the sum of its proper divisors (127158088).

145323512 is a wasteful number, since it uses less digits than its factorization.

145323512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18165445 (or 18165441 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 145323512 is about 12055.0201990706. The cubic root of 145323512 is about 525.7492093833.

The spelling of 145323512 in words is "one hundred forty-five million, three hundred twenty-three thousand, five hundred twelve".