78151103 has 2 divisors, whose sum is σ = 78151104. Its totient is φ = 78151102.

The previous prime is 78151039. The next prime is 78151189. The reversal of 78151103 is 30115187.

It is a weak prime.

It is an emirp because it is prime and its reverse (30115187) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78151103 - 2⁶ = 78151039 is a prime.

It is a super-2 number, since 2×78151103² = 12215189800233218, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78151903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39075551 + 39075552.

It is an arithmetic number, because the mean of its divisors is an integer number (39075552).

Almost surely, 2^78151103 is an apocalyptic number.

78151103 is a deficient number, since it is larger than the sum of its proper divisors (1).

78151103 is an equidigital number, since it uses as much as digits as its factorization.

78151103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 78151103 is about 8840.3112501767. The cubic root of 78151103 is about 427.5415925698.

The spelling of 78151103 in words is "seventy-eight million, one hundred fifty-one thousand, one hundred three".