858632057 has 2 divisors, whose sum is σ = 858632058. Its totient is φ = 858632056.

The previous prime is 858632023. The next prime is 858632063. The reversal of 858632057 is 750236858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 830073721 + 28558336 = 28811^2 + 5344^2 .

It is a cyclic number.

It is not a de Polignac number, because 858632057 - 2⁶ = 858631993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 858631999 and 858632017.

It is not a weakly prime, because it can be changed into another prime (858631057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429316028 + 429316029.

It is an arithmetic number, because the mean of its divisors is an integer number (429316029).

Almost surely, 2^858632057 is an apocalyptic number.

It is an amenable number.

858632057 is a deficient number, since it is larger than the sum of its proper divisors (1).

858632057 is an equidigital number, since it uses as much as digits as its factorization.

858632057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 858632057 is about 29302.4240806115. The cubic root of 858632057 is about 950.4640602575.

The spelling of 858632057 in words is "eight hundred fifty-eight million, six hundred thirty-two thousand, fifty-seven".