145103504 has 120 divisors (see below), whose sum is σ = 368101440. Its totient is φ = 54819072.

The previous prime is 145103503. The next prime is 145103509. The reversal of 145103504 is 405301541.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 145103504.

It is not an unprimeable number, because it can be changed into a prime (145103503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 234107 + ... + 234725.

It is an arithmetic number, because the mean of its divisors is an integer number (3067512).

Almost surely, 2^145103504 is an apocalyptic number.

145103504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145103504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184050720).

145103504 is an abundant number, since it is smaller than the sum of its proper divisors (222997936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145103504 is a wasteful number, since it uses less digits than its factorization.

145103504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 145103504 is about 12045.8915817801. The cubic root of 145103504 is about 525.4837615082.

The spelling of 145103504 in words is "one hundred forty-five million, one hundred three thousand, five hundred four".