78498151 has 2 divisors, whose sum is σ = 78498152. Its totient is φ = 78498150.

The previous prime is 78498059. The next prime is 78498179. The reversal of 78498151 is 15189487.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (15189487) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78498151 - 2⁷ = 78498023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78498098 and 78498107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78498181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39249075 + 39249076.

It is an arithmetic number, because the mean of its divisors is an integer number (39249076).

Almost surely, 2^78498151 is an apocalyptic number.

78498151 is a deficient number, since it is larger than the sum of its proper divisors (1).

78498151 is an equidigital number, since it uses as much as digits as its factorization.

78498151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 43.

The square root of 78498151 is about 8859.9182276136. The cubic root of 78498151 is about 428.1735237664.

The spelling of 78498151 in words is "seventy-eight million, four hundred ninety-eight thousand, one hundred fifty-one".