78550103 has 2 divisors, whose sum is σ = 78550104. Its totient is φ = 78550102.

The previous prime is 78550093. The next prime is 78550133. The reversal of 78550103 is 30105587.

It is a weak prime.

It is an emirp because it is prime and its reverse (30105587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78550103 - 2⁶ = 78550039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78550133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39275051 + 39275052.

It is an arithmetic number, because the mean of its divisors is an integer number (39275052).

Almost surely, 2^78550103 is an apocalyptic number.

78550103 is a deficient number, since it is larger than the sum of its proper divisors (1).

78550103 is an equidigital number, since it uses as much as digits as its factorization.

78550103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 78550103 is about 8862.8495981823. The cubic root of 78550103 is about 428.2679615127.

The spelling of 78550103 in words is "seventy-eight million, five hundred fifty thousand, one hundred three".