858525047 has 2 divisors, whose sum is σ = 858525048. Its totient is φ = 858525046.

The previous prime is 858524963. The next prime is 858525049. The reversal of 858525047 is 740525858.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 858525047 - 2¹⁸ = 858262903 is a prime.

Together with 858525049, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 858524989 and 858525007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (858525049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429262523 + 429262524.

It is an arithmetic number, because the mean of its divisors is an integer number (429262524).

Almost surely, 2^858525047 is an apocalyptic number.

858525047 is a deficient number, since it is larger than the sum of its proper divisors (1).

858525047 is an equidigital number, since it uses as much as digits as its factorization.

858525047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448000, while the sum is 44.

The square root of 858525047 is about 29300.5980655686. The cubic root of 858525047 is about 950.4245736563.

The spelling of 858525047 in words is "eight hundred fifty-eight million, five hundred twenty-five thousand, forty-seven".