878291551 has 2 divisors, whose sum is σ = 878291552. Its totient is φ = 878291550.

The previous prime is 878291539. The next prime is 878291563. The reversal of 878291551 is 155192878.

It is a balanced prime because it is at equal distance from previous prime (878291539) and next prime (878291563).

It is a cyclic number.

It is not a de Polignac number, because 878291551 - 2⁷ = 878291423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (878291581) 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, 439145775 + 439145776.

It is an arithmetic number, because the mean of its divisors is an integer number (439145776).

Almost surely, 2^878291551 is an apocalyptic number.

878291551 is a deficient number, since it is larger than the sum of its proper divisors (1).

878291551 is an equidigital number, since it uses as much as digits as its factorization.

878291551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 46.

The square root of 878291551 is about 29635.9840565486. The cubic root of 878291551 is about 957.6634259880.

The spelling of 878291551 in words is "eight hundred seventy-eight million, two hundred ninety-one thousand, five hundred fifty-one".