145320503 has 2 divisors, whose sum is σ = 145320504. Its totient is φ = 145320502.

The previous prime is 145320499. The next prime is 145320547. The reversal of 145320503 is 305023541.

145320503 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 is a cyclic number.

It is not a de Polignac number, because 145320503 - 2² = 145320499 is a prime.

It is a super-2 number, since 2×145320503² = 42236097184346018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145320103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72660251 + 72660252.

It is an arithmetic number, because the mean of its divisors is an integer number (72660252).

Almost surely, 2^145320503 is an apocalyptic number.

145320503 is a deficient number, since it is larger than the sum of its proper divisors (1).

145320503 is an equidigital number, since it uses as much as digits as its factorization.

145320503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 145320503 is about 12054.8953956474. The cubic root of 145320503 is about 525.7455807200.

The spelling of 145320503 in words is "one hundred forty-five million, three hundred twenty thousand, five hundred three".