51196069 has 2 divisors, whose sum is σ = 51196070. Its totient is φ = 51196068.

The previous prime is 51196009. The next prime is 51196073. The reversal of 51196069 is 96069115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50951044 + 245025 = 7138^2 + 495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51196069 is a prime.

It is a super-2 number, since 2×51196069² = 5242074962105522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51196009) 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, 25598034 + 25598035.

It is an arithmetic number, because the mean of its divisors is an integer number (25598035).

Almost surely, 2^51196069 is an apocalyptic number.

It is an amenable number.

51196069 is a deficient number, since it is larger than the sum of its proper divisors (1).

51196069 is an equidigital number, since it uses as much as digits as its factorization.

51196069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 51196069 is about 7155.1428357511. The cubic root of 51196069 is about 371.3176032762.

It can be divided in two parts, 511 and 96069, that added together give a triangular number (96580 = T₄₃₉).

The spelling of 51196069 in words is "fifty-one million, one hundred ninety-six thousand, sixty-nine".