145298915 has 16 divisors (see below), whose sum is σ = 184952160. Its totient is φ = 109201920.

The previous prime is 145298893. The next prime is 145298921. The reversal of 145298915 is 519892541.

It is a Cunningham number, because it is equal to 12054²-1.

It is not a de Polignac number, because 145298915 - 2¹⁶ = 145233379 is a prime.

It is a super-2 number, since 2×145298915² = 42223549400354450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59060 + ... + 61470.

It is an arithmetic number, because the mean of its divisors is an integer number (11559510).

Almost surely, 2^145298915 is an apocalyptic number.

145298915 is a deficient number, since it is larger than the sum of its proper divisors (39653245).

145298915 is a wasteful number, since it uses less digits than its factorization.

145298915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142.

The product of its digits is 129600, while the sum is 44.

The square root of 145298915 is about 12053.9999585200. Note that the first 4 decimals coincide. The cubic root of 145298915 is about 525.7195454911.

The spelling of 145298915 in words is "one hundred forty-five million, two hundred ninety-eight thousand, nine hundred fifteen".