145545015 has 32 divisors (see below), whose sum is σ = 290336256. Its totient is φ = 60485760.

The previous prime is 145544983. The next prime is 145545053. The reversal of 145545015 is 510545541.

It is not a de Polignac number, because 145545015 - 2⁵ = 145544983 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61852 + ... + 64161.

It is an arithmetic number, because the mean of its divisors is an integer number (9073008).

Almost surely, 2^145545015 is an apocalyptic number.

145545015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145545015 is a deficient number, since it is larger than the sum of its proper divisors (144791241).

145545015 is a wasteful number, since it uses less digits than its factorization.

145545015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126039.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 145545015 is about 12064.2038692986. The cubic root of 145545015 is about 526.0161905217.

The spelling of 145545015 in words is "one hundred forty-five million, five hundred forty-five thousand, fifteen".