51019469 has 2 divisors, whose sum is σ = 51019470. Its totient is φ = 51019468.

The previous prime is 51019453. The next prime is 51019511. The reversal of 51019469 is 96491015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38502025 + 12517444 = 6205^2 + 3538^2 .

It is a cyclic number.

It is not a de Polignac number, because 51019469 - 2⁴ = 51019453 is a prime.

It is a super-2 number, since 2×51019469² = 5205972434083922, which contains 22 as substring.

It is a Chen prime.

It is equal to p_3058568 and since 51019469 and 3058568 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 (51019429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25509734 + 25509735.

It is an arithmetic number, because the mean of its divisors is an integer number (25509735).

Almost surely, 2^51019469 is an apocalyptic number.

It is an amenable number.

51019469 is a deficient number, since it is larger than the sum of its proper divisors (1).

51019469 is an equidigital number, since it uses as much as digits as its factorization.

51019469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 51019469 is about 7142.7914011260. The cubic root of 51019469 is about 370.8901600860.

The spelling of 51019469 in words is "fifty-one million, nineteen thousand, four hundred sixty-nine".