145452105 has 40 divisors (see below), whose sum is σ = 263938752. Its totient is φ = 76622112.

The previous prime is 145452089. The next prime is 145452113. The reversal of 145452105 is 501254541.

145452105 is a `hidden beast` number, since 14 + 545 + 2 + 105 = 666.

It is not a de Polignac number, because 145452105 - 2⁴ = 145452089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between odd and even.

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 39 ways as a sum of consecutive naturals, for example, 31452 + ... + 35778.

Almost surely, 2^145452105 is an apocalyptic number.

145452105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145452105 is a deficient number, since it is larger than the sum of its proper divisors (118486647).

145452105 is an equidigital number, since it uses as much as digits as its factorization.

145452105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4427 (or 4418 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 145452105 is about 12060.3526067856. The cubic root of 145452105 is about 525.9042376039.

The spelling of 145452105 in words is "one hundred forty-five million, four hundred fifty-two thousand, one hundred five".