145521752 has 16 divisors (see below), whose sum is σ = 272995800. Its totient is φ = 72722880.

The previous prime is 145521749. The next prime is 145521763. The reversal of 145521752 is 257125541.

It is a congruent number.

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, 17852 + ... + 24692.

Almost surely, 2^145521752 is an apocalyptic number.

It is an amenable number.

145521752 is a deficient number, since it is larger than the sum of its proper divisors (127474048).

145521752 is a wasteful number, since it uses less digits than its factorization.

145521752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9506 (or 9502 counting only the distinct ones).

The product of its digits is 14000, while the sum is 32.

The square root of 145521752 is about 12063.2396975274. The cubic root of 145521752 is about 525.9881639884.

The spelling of 145521752 in words is "one hundred forty-five million, five hundred twenty-one thousand, seven hundred fifty-two".