145353321 has 12 divisors (see below), whose sum is σ = 210882672. Its totient is φ = 96473976.

The previous prime is 145353319. The next prime is 145353331. The reversal of 145353321 is 123353541.

145353321 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 145353321 - 2¹ = 145353319 is a prime.

It is a super-2 number, since 2×145353321² = 42255175851458082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145353311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33531 + ... + 37616.

It is an arithmetic number, because the mean of its divisors is an integer number (17573556).

Almost surely, 2^145353321 is an apocalyptic number.

It is an amenable number.

145353321 is a deficient number, since it is larger than the sum of its proper divisors (65529351).

145353321 is a wasteful number, since it uses less digits than its factorization.

145353321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71380 (or 71377 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 145353321 is about 12056.2565085519. The cubic root of 145353321 is about 525.7851544425.

The spelling of 145353321 in words is "one hundred forty-five million, three hundred fifty-three thousand, three hundred twenty-one".