145452331 has 2 divisors, whose sum is σ = 145452332. Its totient is φ = 145452330.

The previous prime is 145452319. The next prime is 145452343. The reversal of 145452331 is 133254541.

It is a balanced prime because it is at equal distance from previous prime (145452319) and next prime (145452343).

It is a cyclic number.

It is not a de Polignac number, because 145452331 - 2⁹ = 145451819 is a prime.

It is a super-2 number, since 2×145452331² = 42312761186667122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145452331.

It is not a weakly prime, because it can be changed into another prime (145452301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72726165 + 72726166.

It is an arithmetic number, because the mean of its divisors is an integer number (72726166).

Almost surely, 2^145452331 is an apocalyptic number.

145452331 is a deficient number, since it is larger than the sum of its proper divisors (1).

145452331 is an equidigital number, since it uses as much as digits as its factorization.

145452331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 28.

The square root of 145452331 is about 12060.3619763256. The cubic root of 145452331 is about 525.9045099829.

The spelling of 145452331 in words is "one hundred forty-five million, four hundred fifty-two thousand, three hundred thirty-one".