500000061 has 16 divisors (see below), whose sum is σ = 727721280. Its totient is φ = 302843520.

The previous prime is 500000057. The next prime is 500000069. The reversal of 500000061 is 160000005.

It is not a de Polignac number, because 500000061 - 2² = 500000057 is a prime.

It is a super-2 number, since 2×500000061² = 500000122000007442, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 499999992 and 500000046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500000069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65311 + ... + 72563.

It is an arithmetic number, because the mean of its divisors is an integer number (45482580).

Almost surely, 2^500000061 is an apocalyptic number.

It is an amenable number.

500000061 is a deficient number, since it is larger than the sum of its proper divisors (227721219).

500000061 is a wasteful number, since it uses less digits than its factorization.

500000061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9356.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 500000061 is about 22360.6811389993. The cubic root of 500000061 is about 793.7005582613.

Adding to 500000061 its reverse (160000005), we get a palindrome (660000066).

The spelling of 500000061 in words is "five hundred million, sixty-one", and thus it is an aban number.