78352733 has 2 divisors, whose sum is σ = 78352734. Its totient is φ = 78352732.

The previous prime is 78352727. The next prime is 78352739. The reversal of 78352733 is 33725387.

It is a balanced prime because it is at equal distance from previous prime (78352727) and next prime (78352739).

It can be written as a sum of positive squares in only one way, i.e., 63313849 + 15038884 = 7957^2 + 3878^2 .

It is an emirp because it is prime and its reverse (33725387) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78352733 - 2¹⁰ = 78351709 is a prime.

It is a super-2 number, since 2×78352733² = 12278301537138578, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78352739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39176366 + 39176367.

It is an arithmetic number, because the mean of its divisors is an integer number (39176367).

Almost surely, 2^78352733 is an apocalyptic number.

It is an amenable number.

78352733 is a deficient number, since it is larger than the sum of its proper divisors (1).

78352733 is an equidigital number, since it uses as much as digits as its factorization.

78352733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 38.

The square root of 78352733 is about 8851.7079142954. The cubic root of 78352733 is about 427.9089628630.

The spelling of 78352733 in words is "seventy-eight million, three hundred fifty-two thousand, seven hundred thirty-three".