78241733 has 2 divisors, whose sum is σ = 78241734. Its totient is φ = 78241732.

The previous prime is 78241687. The next prime is 78241741. The reversal of 78241733 is 33714287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51595489 + 26646244 = 7183^2 + 5162^2 .

It is an emirp because it is prime and its reverse (33714287) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78241733 - 2⁸ = 78241477 is a prime.

It is a super-3 number, since 3×78241733³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 78241693 and 78241702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78241783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39120866 + 39120867.

It is an arithmetic number, because the mean of its divisors is an integer number (39120867).

Almost surely, 2^78241733 is an apocalyptic number.

It is an amenable number.

78241733 is a deficient number, since it is larger than the sum of its proper divisors (1).

78241733 is an equidigital number, since it uses as much as digits as its factorization.

78241733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 35.

The square root of 78241733 is about 8845.4357156671. The cubic root of 78241733 is about 427.7067987080.

The spelling of 78241733 in words is "seventy-eight million, two hundred forty-one thousand, seven hundred thirty-three".