505000545901 has 2 divisors, whose sum is σ = 505000545902. Its totient is φ = 505000545900.

The previous prime is 505000545887. The next prime is 505000545943. The reversal of 505000545901 is 109545000505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 456556976100 + 48443569801 = 675690^2 + 220099^2 .

It is a cyclic number.

It is not a de Polignac number, because 505000545901 - 2⁷ = 505000545773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505000545991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252500272950 + 252500272951.

It is an arithmetic number, because the mean of its divisors is an integer number (252500272951).

Almost surely, 2^505000545901 is an apocalyptic number.

It is an amenable number.

505000545901 is a deficient number, since it is larger than the sum of its proper divisors (1).

505000545901 is an equidigital number, since it uses as much as digits as its factorization.

505000545901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 505000545901 in words is "five hundred five billion, five hundred forty-five thousand, nine hundred one".