505450101 has 24 divisors (see below), whose sum is σ = 732058560. Its totient is φ = 310068096.

The previous prime is 505450063. The next prime is 505450111. The reversal of 505450101 is 101054505.

It is not a de Polignac number, because 505450101 - 2¹⁵ = 505417333 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505450111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180625 + ... + 183401.

It is an arithmetic number, because the mean of its divisors is an integer number (30502440).

Almost surely, 2^505450101 is an apocalyptic number.

It is an amenable number.

505450101 is a deficient number, since it is larger than the sum of its proper divisors (226608459).

505450101 is a wasteful number, since it uses less digits than its factorization.

505450101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165 (or 3152 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 505450101 is about 22482.2174395677. The cubic root of 505450101 is about 796.5739428817.

It can be divided in two parts, 5054 and 50101, that added together give a palindrome (55155).

The spelling of 505450101 in words is "five hundred five million, four hundred fifty thousand, one hundred one".