51107009 has 2 divisors, whose sum is σ = 51107010. Its totient is φ = 51107008.

The previous prime is 51106969. The next prime is 51107029. The reversal of 51107009 is 90070115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50367409 + 739600 = 7097^2 + 860^2 .

It is a cyclic number.

It is not a de Polignac number, because 51107009 - 2⁸ = 51106753 is a prime.

It is a super-3 number, since 3×51107009³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51107029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25553504 + 25553505.

It is an arithmetic number, because the mean of its divisors is an integer number (25553505).

Almost surely, 2^51107009 is an apocalyptic number.

It is an amenable number.

51107009 is a deficient number, since it is larger than the sum of its proper divisors (1).

51107009 is an equidigital number, since it uses as much as digits as its factorization.

51107009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 315, while the sum is 23.

The square root of 51107009 is about 7148.9166312106. The cubic root of 51107009 is about 371.1021652505.

The spelling of 51107009 in words is "fifty-one million, one hundred seven thousand, nine".