145645245 has 24 divisors (see below), whose sum is σ = 257826816. Its totient is φ = 76023648.

The previous prime is 145645237. The next prime is 145645249. The reversal of 145645245 is 542546541.

145645245 is a `hidden beast` number, since 1 + 4 + 5 + 645 + 2 + 4 + 5 = 666.

It is not a de Polignac number, because 145645245 - 2³ = 145645237 is a prime.

It is a super-2 number, since 2×145645245² = 42425074782220050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145645249) 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 23 ways as a sum of consecutive naturals, for example, 32317 + ... + 36546.

It is an arithmetic number, because the mean of its divisors is an integer number (10742784).

Almost surely, 2^145645245 is an apocalyptic number.

145645245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145645245 is a deficient number, since it is larger than the sum of its proper divisors (112181571).

145645245 is a wasteful number, since it uses less digits than its factorization.

145645245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68921 (or 68918 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The square root of 145645245 is about 12068.3571790033. The cubic root of 145645245 is about 526.1369103436.

The spelling of 145645245 in words is "one hundred forty-five million, six hundred forty-five thousand, two hundred forty-five".