145478293 has 2 divisors, whose sum is σ = 145478294. Its totient is φ = 145478292.

The previous prime is 145478273. The next prime is 145478323. The reversal of 145478293 is 392874541.

145478293 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136585969 + 8892324 = 11687^2 + 2982^2 .

It is a cyclic number.

It is not a de Polignac number, because 145478293 - 2⁵ = 145478261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145478213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72739146 + 72739147.

It is an arithmetic number, because the mean of its divisors is an integer number (72739147).

Almost surely, 2^145478293 is an apocalyptic number.

It is an amenable number.

145478293 is a deficient number, since it is larger than the sum of its proper divisors (1).

145478293 is an equidigital number, since it uses as much as digits as its factorization.

145478293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

The square root of 145478293 is about 12061.4382641541. The cubic root of 145478293 is about 525.9357979440.

The spelling of 145478293 in words is "one hundred forty-five million, four hundred seventy-eight thousand, two hundred ninety-three".