868854251 has 2 divisors, whose sum is σ = 868854252. Its totient is φ = 868854250.

The previous prime is 868854227. The next prime is 868854263. The reversal of 868854251 is 152458868.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 868854251 - 2¹⁴ = 868837867 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 868854196 and 868854205.

It is not a weakly prime, because it can be changed into another prime (868854551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434427125 + 434427126.

It is an arithmetic number, because the mean of its divisors is an integer number (434427126).

Almost surely, 2^868854251 is an apocalyptic number.

868854251 is a deficient number, since it is larger than the sum of its proper divisors (1).

868854251 is an equidigital number, since it uses as much as digits as its factorization.

868854251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 614400, while the sum is 47.

The square root of 868854251 is about 29476.3337442091. Note that the first 3 decimals coincide. The cubic root of 868854251 is about 954.2210147526.

The spelling of 868854251 in words is "eight hundred sixty-eight million, eight hundred fifty-four thousand, two hundred fifty-one".