145521164 has 6 divisors (see below), whose sum is σ = 254662044. Its totient is φ = 72760580.

The previous prime is 145521163. The next prime is 145521169. The reversal of 145521164 is 461125541.

It is not an unprimeable number, because it can be changed into a prime (145521163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18190142 + ... + 18190149.

It is an arithmetic number, because the mean of its divisors is an integer number (42443674).

Almost surely, 2^145521164 is an apocalyptic number.

It is an amenable number.

145521164 is a deficient number, since it is larger than the sum of its proper divisors (109140880).

145521164 is a wasteful number, since it uses less digits than its factorization.

145521164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36380295 (or 36380293 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 145521164 is about 12063.2153259403. The cubic root of 145521164 is about 525.9874555457.

The spelling of 145521164 in words is "one hundred forty-five million, five hundred twenty-one thousand, one hundred sixty-four".