145439153 has 2 divisors, whose sum is σ = 145439154. Its totient is φ = 145439152.

The previous prime is 145439117. The next prime is 145439171. The reversal of 145439153 is 351934541.

145439153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124389409 + 21049744 = 11153^2 + 4588^2 .

It is a cyclic number.

It is not a de Polignac number, because 145439153 - 2¹² = 145435057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (145439113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72719576 + 72719577.

It is an arithmetic number, because the mean of its divisors is an integer number (72719577).

Almost surely, 2^145439153 is an apocalyptic number.

It is an amenable number.

145439153 is a deficient number, since it is larger than the sum of its proper divisors (1).

145439153 is an equidigital number, since it uses as much as digits as its factorization.

145439153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 35.

The square root of 145439153 is about 12059.8156287731. The cubic root of 145439153 is about 525.8886271644. Note that the first 3 decimals are identical.

The spelling of 145439153 in words is "one hundred forty-five million, four hundred thirty-nine thousand, one hundred fifty-three".