145903523 has 2 divisors, whose sum is σ = 145903524. Its totient is φ = 145903522.

The previous prime is 145903481. The next prime is 145903531. The reversal of 145903523 is 325309541.

145903523 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 is an emirp because it is prime and its reverse (325309541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145903523 - 2¹² = 145899427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145903523.

It is not a weakly prime, because it can be changed into another prime (145903573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72951761 + 72951762.

It is an arithmetic number, because the mean of its divisors is an integer number (72951762).

Almost surely, 2^145903523 is an apocalyptic number.

145903523 is a deficient number, since it is larger than the sum of its proper divisors (1).

145903523 is an equidigital number, since it uses as much as digits as its factorization.

145903523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 145903523 is about 12079.0530671903. The cubic root of 145903523 is about 526.4477325793.

The spelling of 145903523 in words is "one hundred forty-five million, nine hundred three thousand, five hundred twenty-three".