145903 has 2 divisors, whose sum is σ = 145904. Its totient is φ = 145902.

The previous prime is 145897. The next prime is 145931. The reversal of 145903 is 309541.

It is a weak prime.

It is an emirp because it is prime and its reverse (309541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145903 - 2⁹ = 145391 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72951 + 72952.

It is an arithmetic number, because the mean of its divisors is an integer number (72952).

2¹⁴⁵⁹⁰³ is an apocalyptic number.

145903 is a deficient number, since it is larger than the sum of its proper divisors (1).

145903 is an equidigital number, since it uses as much as digits as its factorization.

145903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 145903 is about 381.9725121000. The cubic root of 145903 is about 52.6447103551.

The spelling of 145903 in words is "one hundred forty-five thousand, nine hundred three".