505100550001 has 2 divisors, whose sum is σ = 505100550002. Its totient is φ = 505100550000.

The previous prime is 505100549939. The next prime is 505100550007. The reversal of 505100550001 is 100055001505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 467773923600 + 37326626401 = 683940^2 + 193201^2 .

It is a cyclic number.

It is not a de Polignac number, because 505100550001 - 2¹⁷ = 505100418929 is a prime.

It is a super-2 number, since 2×505100550001² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (505100550007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252550275000 + 252550275001.

It is an arithmetic number, because the mean of its divisors is an integer number (252550275001).

Almost surely, 2^505100550001 is an apocalyptic number.

It is an amenable number.

505100550001 is a deficient number, since it is larger than the sum of its proper divisors (1).

505100550001 is an equidigital number, since it uses as much as digits as its factorization.

505100550001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 625, while the sum is 22.

Adding to 505100550001 its reverse (100055001505), we get a palindrome (605155551506).

The spelling of 505100550001 in words is "five hundred five billion, one hundred million, five hundred fifty thousand, one".