145023645 has 16 divisors (see below), whose sum is σ = 249887232. Its totient is φ = 71396160.

The previous prime is 145023643. The next prime is 145023647. The reversal of 145023645 is 546320541.

It is an interprime number because it is at equal distance from previous prime (145023643) and next prime (145023647).

It is not a de Polignac number, because 145023645 - 2¹ = 145023643 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145023643) 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 15 ways as a sum of consecutive naturals, for example, 371661 + ... + 372050.

It is an arithmetic number, because the mean of its divisors is an integer number (15617952).

Almost surely, 2^145023645 is an apocalyptic number.

145023645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145023645 is a deficient number, since it is larger than the sum of its proper divisors (104863587).

145023645 is a wasteful number, since it uses less digits than its factorization.

145023645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743732.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 145023645 is about 12042.5763439556. The cubic root of 145023645 is about 525.3873422685.

The spelling of 145023645 in words is "one hundred forty-five million, twenty-three thousand, six hundred forty-five".