500100061 has 4 divisors (see below), whose sum is σ = 500166172. Its totient is φ = 500033952.

The previous prime is 500100049. The next prime is 500100077. The reversal of 500100061 is 160001005.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 258888100 + 241211961 = 16090^2 + 15531^2 .

It is a cyclic number.

It is not a de Polignac number, because 500100061 - 2⁹ = 500099549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500100031) 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, 19986 + ... + 37411.

It is an arithmetic number, because the mean of its divisors is an integer number (125041543).

Almost surely, 2^500100061 is an apocalyptic number.

It is an amenable number.

500100061 is a deficient number, since it is larger than the sum of its proper divisors (66111).

500100061 is an equidigital number, since it uses as much as digits as its factorization.

500100061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66110.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 500100061 is about 22362.9170950482. The cubic root of 500100061 is about 793.7534680982.

Adding to 500100061 its reverse (160001005), we get a palindrome (660101066).

The spelling of 500100061 in words is "five hundred million, one hundred thousand, sixty-one".