505051105001 has 4 divisors (see below), whose sum is σ = 505130534400. Its totient is φ = 504971675604.

The previous prime is 505051104991. The next prime is 505051105003. The reversal of 505051105001 is 100501150505.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505051105001 is a prime.

It is a super-2 number, since 2×505051105001² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505051105003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39705161 + ... + 39717878.

It is an arithmetic number, because the mean of its divisors is an integer number (126282633600).

Almost surely, 2^505051105001 is an apocalyptic number.

It is an amenable number.

505051105001 is a deficient number, since it is larger than the sum of its proper divisors (79429399).

505051105001 is an equidigital number, since it uses as much as digits as its factorization.

505051105001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79429398.

The product of its (nonzero) digits is 625, while the sum is 23.

Adding to 505051105001 its reverse (100501150505), we get a palindrome (605552255506).

The spelling of 505051105001 in words is "five hundred five billion, fifty-one million, one hundred five thousand, one".