51844669 has 2 divisors, whose sum is σ = 51844670. Its totient is φ = 51844668.

The previous prime is 51844631. The next prime is 51844717. The reversal of 51844669 is 96644815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40487769 + 11356900 = 6363^2 + 3370^2 .

It is a cyclic number.

It is not a de Polignac number, because 51844669 - 2¹⁵ = 51811901 is a prime.

It is a super-2 number, since 2×51844669² = 5375739407439122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51844609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25922334 + 25922335.

It is an arithmetic number, because the mean of its divisors is an integer number (25922335).

Almost surely, 2^51844669 is an apocalyptic number.

It is an amenable number.

51844669 is a deficient number, since it is larger than the sum of its proper divisors (1).

51844669 is an equidigital number, since it uses as much as digits as its factorization.

51844669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 43.

The square root of 51844669 is about 7200.3242288108. The cubic root of 51844669 is about 372.8790945671.

The spelling of 51844669 in words is "fifty-one million, eight hundred forty-four thousand, six hundred sixty-nine".