51153109 has 12 divisors (see below), whose sum is σ = 60630444. Its totient is φ = 43016064.

The previous prime is 51153107. The next prime is 51153161. The reversal of 51153109 is 90135115.

It can be written as a sum of positive squares in 2 ways, for example, as 20958084 + 30195025 = 4578^2 + 5495^2 .

It is not a de Polignac number, because 51153109 - 2¹ = 51153107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51153103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7252 + ... + 12445.

It is an arithmetic number, because the mean of its divisors is an integer number (5052537).

Almost surely, 2^51153109 is an apocalyptic number.

It is an amenable number.

51153109 is a deficient number, since it is larger than the sum of its proper divisors (9477335).

51153109 is a wasteful number, since it uses less digits than its factorization.

51153109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19764 (or 19757 counting only the distinct ones).

The product of its (nonzero) digits is 675, while the sum is 25.

The square root of 51153109 is about 7152.1401692081. The cubic root of 51153109 is about 371.2137133455.

The spelling of 51153109 in words is "fifty-one million, one hundred fifty-three thousand, one hundred nine".