144521307 has 32 divisors (see below), whose sum is σ = 245276160. Its totient is φ = 82386720.

The previous prime is 144521291. The next prime is 144521309. The reversal of 144521307 is 703125441.

144521307 is a `hidden beast` number, since 1 + 445 + 213 + 0 + 7 = 666.

144521307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144521307 - 2⁴ = 144521291 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (144521309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122832 + ... + 124002.

It is an arithmetic number, because the mean of its divisors is an integer number (7664880).

Almost surely, 2^144521307 is an apocalyptic number.

144521307 is a deficient number, since it is larger than the sum of its proper divisors (100754853).

144521307 is a wasteful number, since it uses less digits than its factorization.

144521307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840 (or 1834 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 144521307 is about 12021.7015018674. The cubic root of 144521307 is about 524.7800221267.

Adding to 144521307 its reverse (703125441), we get a palindrome (847646748).

The spelling of 144521307 in words is "one hundred forty-four million, five hundred twenty-one thousand, three hundred seven".