145547 has 2 divisors, whose sum is σ = 145548. Its totient is φ = 145546.

The previous prime is 145543. The next prime is 145549. The reversal of 145547 is 745541.

145547 is nontrivially palindromic in base 15.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145547 - 2² = 145543 is a prime.

Together with 145549, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (145543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72773 + 72774.

It is an arithmetic number, because the mean of its divisors is an integer number (72774).

2¹⁴⁵⁵⁴⁷ is an apocalyptic number.

145547 is a deficient number, since it is larger than the sum of its proper divisors (1).

145547 is an equidigital number, since it uses as much as digits as its factorization.

145547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800, while the sum is 26.

The square root of 145547 is about 381.5062253752. The cubic root of 145547 is about 52.6018581849.

The spelling of 145547 in words is "one hundred forty-five thousand, five hundred forty-seven".