145020015 has 48 divisors (see below), whose sum is σ = 296564736. Its totient is φ = 64152000.

The previous prime is 145020011. The next prime is 145020017. The reversal of 145020015 is 510020541.

145020015 is a `hidden beast` number, since 1 + 450 + 200 + 15 = 666.

145020015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145020015 - 2² = 145020011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145020015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145020011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2340 + ... + 17190.

It is an arithmetic number, because the mean of its divisors is an integer number (6178432).

Almost surely, 2^145020015 is an apocalyptic number.

145020015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145020015 is an abundant number, since it is smaller than the sum of its proper divisors (151544721).

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

145020015 is a wasteful number, since it uses less digits than its factorization.

145020015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14900 (or 14897 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 145020015 is about 12042.4256277546. The cubic root of 145020015 is about 525.3829586800.

Adding to 145020015 its reverse (510020541), we get a palindrome (655040556).

The spelling of 145020015 in words is "one hundred forty-five million, twenty thousand, fifteen".