145544115 has 32 divisors (see below), whose sum is σ = 246366720. Its totient is φ = 73218816.

The previous prime is 145544111. The next prime is 145544129. The reversal of 145544115 is 511445541.

It is not a de Polignac number, because 145544115 - 2² = 145544111 is a prime.

It is a super-2 number, since 2×145544115² = 42366178822266450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145544111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22296 + ... + 28074.

It is an arithmetic number, because the mean of its divisors is an integer number (7698960).

Almost surely, 2^145544115 is an apocalyptic number.

145544115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145544115 is a deficient number, since it is larger than the sum of its proper divisors (100822605).

145544115 is a wasteful number, since it uses less digits than its factorization.

145544115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5883.

The product of its digits is 8000, while the sum is 30.

The square root of 145544115 is about 12064.1665688103. The cubic root of 145544115 is about 526.0151062854.

Adding to 145544115 its reverse (511445541), we get a palindrome (656989656).

The spelling of 145544115 in words is "one hundred forty-five million, five hundred forty-four thousand, one hundred fifteen".