51137069 has 2 divisors, whose sum is σ = 51137070. Its totient is φ = 51137068.

The previous prime is 51137039. The next prime is 51137117. The reversal of 51137069 is 96073115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25755625 + 25381444 = 5075^2 + 5038^2 .

It is a cyclic number.

It is not a de Polignac number, because 51137069 - 2¹² = 51132973 is a prime.

It is a super-2 number, since 2×51137069² = 5229999651821522, which contains 22 as substring.

It is equal to p_3065189 and since 51137069 and 3065189 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51137039) 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 as a sum of consecutive naturals, namely, 25568534 + 25568535.

It is an arithmetic number, because the mean of its divisors is an integer number (25568535).

Almost surely, 2^51137069 is an apocalyptic number.

It is an amenable number.

51137069 is a deficient number, since it is larger than the sum of its proper divisors (1).

51137069 is an equidigital number, since it uses as much as digits as its factorization.

51137069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 51137069 is about 7151.0187386134. The cubic root of 51137069 is about 371.1749089890.

The spelling of 51137069 in words is "fifty-one million, one hundred thirty-seven thousand, sixty-nine".