145520500 has 24 divisors (see below), whose sum is σ = 317817864. Its totient is φ = 58208000.

The previous prime is 145520447. The next prime is 145520503. The reversal of 145520500 is 5025541.

It can be written as a sum of positive squares in 4 ways, for example, as 992016 + 144528484 = 996^2 + 12022^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145520503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145021 + ... + 146020.

It is an arithmetic number, because the mean of its divisors is an integer number (13242411).

Almost surely, 2^145520500 is an apocalyptic number.

145520500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145520500 is an abundant number, since it is smaller than the sum of its proper divisors (172297364).

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

145520500 is a wasteful number, since it uses less digits than its factorization.

145520500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291060 (or 291048 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 145520500 is about 12063.1878042249. The cubic root of 145520500 is about 525.9866555333.

The spelling of 145520500 in words is "one hundred forty-five million, five hundred twenty thousand, five hundred".