145745145 has 48 divisors (see below), whose sum is σ = 310931712. Its totient is φ = 61499520.

The previous prime is 145745137. The next prime is 145745147. The reversal of 145745145 is 541547541.

It is not a de Polignac number, because 145745145 - 2³ = 145745137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145745147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13701 + ... + 21890.

It is an arithmetic number, because the mean of its divisors is an integer number (6477744).

Almost surely, 2^145745145 is an apocalyptic number.

145745145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145745145 is an abundant number, since it is smaller than the sum of its proper divisors (165186567).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145745145 is a wasteful number, since it uses less digits than its factorization.

145745145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35622 (or 35619 counting only the distinct ones).

The product of its digits is 56000, while the sum is 36.

The square root of 145745145 is about 12072.4953924199. The cubic root of 145745145 is about 526.2571776055.

The spelling of 145745145 in words is "one hundred forty-five million, seven hundred forty-five thousand, one hundred forty-five".