345503503 has 2 divisors, whose sum is σ = 345503504. Its totient is φ = 345503502.

The previous prime is 345503491. The next prime is 345503531. The reversal of 345503503 is 305305543.

It is an a-pointer prime, because the next prime (345503531) can be obtained adding 345503503 to its sum of digits (28).

It is a weak prime.

It is an emirp because it is prime and its reverse (305305543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345503503 - 2⁵ = 345503471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345503603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172751751 + 172751752.

It is an arithmetic number, because the mean of its divisors is an integer number (172751752).

Almost surely, 2^345503503 is an apocalyptic number.

345503503 is a deficient number, since it is larger than the sum of its proper divisors (1).

345503503 is an equidigital number, since it uses as much as digits as its factorization.

345503503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 28.

The square root of 345503503 is about 18587.7245245350. The cubic root of 345503503 is about 701.6989365218.

The spelling of 345503503 in words is "three hundred forty-five million, five hundred three thousand, five hundred three".