78000541 has 2 divisors, whose sum is σ = 78000542. Its totient is φ = 78000540.

The previous prime is 78000499. The next prime is 78000547. The reversal of 78000541 is 14500087.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74563225 + 3437316 = 8635^2 + 1854^2 .

It is a cyclic number.

It is not a de Polignac number, because 78000541 - 2¹⁹ = 77476253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78000547) 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, 39000270 + 39000271.

It is an arithmetic number, because the mean of its divisors is an integer number (39000271).

Almost surely, 2^78000541 is an apocalyptic number.

It is an amenable number.

78000541 is a deficient number, since it is larger than the sum of its proper divisors (1).

78000541 is an equidigital number, since it uses as much as digits as its factorization.

78000541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 78000541 is about 8831.7914943685. The cubic root of 78000541 is about 427.2668559916.

The spelling of 78000541 in words is "seventy-eight million, five hundred forty-one", and thus it is an aban number.