145021504 has 28 divisors (see below), whose sum is σ = 289407600. Its totient is φ = 72099968.

The previous prime is 145021493. The next prime is 145021507. The reversal of 145021504 is 405120541.

It is not an unprimeable number, because it can be changed into a prime (145021507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5127 + ... + 17785.

Almost surely, 2^145021504 is an apocalyptic number.

It is an amenable number.

145021504 is a deficient number, since it is larger than the sum of its proper divisors (144386096).

145021504 is a wasteful number, since it uses less digits than its factorization.

145021504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12850 (or 12840 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 145021504 is about 12042.4874506889. The cubic root of 145021504 is about 525.3847568055.

The spelling of 145021504 in words is "one hundred forty-five million, twenty-one thousand, five hundred four".