505223445403 has 2 divisors, whose sum is σ = 505223445404. Its totient is φ = 505223445402.

The previous prime is 505223445379. The next prime is 505223445421. The reversal of 505223445403 is 304544322505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505223445403 - 2⁵ = 505223445371 is a prime.

It is not a weakly prime, because it can be changed into another prime (505223445203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252611722701 + 252611722702.

It is an arithmetic number, because the mean of its divisors is an integer number (252611722702).

Almost surely, 2^505223445403 is an apocalyptic number.

505223445403 is a deficient number, since it is larger than the sum of its proper divisors (1).

505223445403 is an equidigital number, since it uses as much as digits as its factorization.

505223445403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288000, while the sum is 37.

Adding to 505223445403 its reverse (304544322505), we get a palindrome (809767767908).

The spelling of 505223445403 in words is "five hundred five billion, two hundred twenty-three million, four hundred forty-five thousand, four hundred three".