5100510861 has 12 divisors (see below), whose sum is σ = 7368420540. Its totient is φ = 3399871680.

The previous prime is 5100510847. The next prime is 5100510887. The reversal of 5100510861 is 1680150015.

It can be written as a sum of positive squares in 2 ways, for example, as 513022500 + 4587488361 = 22650^2 + 67731^2 .

It is not a de Polignac number, because 5100510861 - 2¹⁰ = 5100509837 is a prime.

It is a super-2 number, since 2×5100510861² = 52030422086357922642, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5100510761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37771 + ... + 107831.

It is an arithmetic number, because the mean of its divisors is an integer number (614035045).

Almost surely, 2^5100510861 is an apocalyptic number.

It is an amenable number.

5100510861 is a deficient number, since it is larger than the sum of its proper divisors (2267909679).

5100510861 is a wasteful number, since it uses less digits than its factorization.

5100510861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78156 (or 78153 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The square root of 5100510861 is about 71417.8609382835. The cubic root of 5100510861 is about 1721.3580923601.

Adding to 5100510861 its reverse (1680150015), we get a palindrome (6780660876).

The spelling of 5100510861 in words is "five billion, one hundred million, five hundred ten thousand, eight hundred sixty-one".