145238875 has 32 divisors (see below), whose sum is σ = 192351744. Its totient is φ = 109296000.

The previous prime is 145238867. The next prime is 145238881. The reversal of 145238875 is 578832541.

It is not a de Polignac number, because 145238875 - 2³ = 145238867 is a prime.

It is a super-2 number, since 2×145238875² = 42188661622531250, which contains 22 as substring.

It is a Duffinian number.

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 31 ways as a sum of consecutive naturals, for example, 142869 + ... + 143881.

It is an arithmetic number, because the mean of its divisors is an integer number (6010992).

Almost surely, 2^145238875 is an apocalyptic number.

145238875 is a deficient number, since it is larger than the sum of its proper divisors (47112869).

145238875 is a wasteful number, since it uses less digits than its factorization.

145238875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096 (or 1086 counting only the distinct ones).

The product of its digits is 268800, while the sum is 43.

The square root of 145238875 is about 12051.5092415846. The cubic root of 145238875 is about 525.6471234084.

The spelling of 145238875 in words is "one hundred forty-five million, two hundred thirty-eight thousand, eight hundred seventy-five".