145389075 has 48 divisors (see below), whose sum is σ = 265253856. Its totient is φ = 69811200.

The previous prime is 145389073. The next prime is 145389089. The reversal of 145389075 is 570983541.

It is not a de Polignac number, because 145389075 - 2¹ = 145389073 is a prime.

It is a super-2 number, since 2×145389075² = 42275966258711250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145389073) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 38157 + ... + 41793.

It is an arithmetic number, because the mean of its divisors is an integer number (5526122).

Almost surely, 2^145389075 is an apocalyptic number.

145389075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145389075 is a deficient number, since it is larger than the sum of its proper divisors (119864781).

145389075 is a wasteful number, since it uses less digits than its factorization.

145389075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704 (or 3699 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 145389075 is about 12057.7392159559. The cubic root of 145389075 is about 525.8282617737.

The spelling of 145389075 in words is "one hundred forty-five million, three hundred eighty-nine thousand, seventy-five".