78526741 has 2 divisors, whose sum is σ = 78526742. Its totient is φ = 78526740.

The previous prime is 78526739. The next prime is 78526759. The reversal of 78526741 is 14762587.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73102500 + 5424241 = 8550^2 + 2329^2 .

It is a cyclic number.

It is not a de Polignac number, because 78526741 - 2¹ = 78526739 is a prime.

Together with 78526739, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 78526694 and 78526703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78526241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39263370 + 39263371.

It is an arithmetic number, because the mean of its divisors is an integer number (39263371).

Almost surely, 2^78526741 is an apocalyptic number.

It is an amenable number.

78526741 is a deficient number, since it is larger than the sum of its proper divisors (1).

78526741 is an equidigital number, since it uses as much as digits as its factorization.

78526741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 40.

The square root of 78526741 is about 8861.5315267735. The cubic root of 78526741 is about 428.2254994925.

The spelling of 78526741 in words is "seventy-eight million, five hundred twenty-six thousand, seven hundred forty-one".