145007447 has 8 divisors (see below), whose sum is σ = 159971280. Its totient is φ = 130587840.

The previous prime is 145007383. The next prime is 145007461. The reversal of 145007447 is 744700541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145007447 - 2⁶ = 145007383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145007147) 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 7 ways as a sum of consecutive naturals, for example, 135497 + ... + 136562.

It is an arithmetic number, because the mean of its divisors is an integer number (19996410).

Almost surely, 2^145007447 is an apocalyptic number.

145007447 is a deficient number, since it is larger than the sum of its proper divisors (14963833).

145007447 is a wasteful number, since it uses less digits than its factorization.

145007447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272113.

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 145007447 is about 12041.9037946664. The cubic root of 145007447 is about 525.3677809962.

Adding to 145007447 its reverse (744700541), we get a palindrome (889707988).

The spelling of 145007447 in words is "one hundred forty-five million, seven thousand, four hundred forty-seven".