858351061 has 2 divisors, whose sum is σ = 858351062. Its totient is φ = 858351060.

The previous prime is 858351017. The next prime is 858351073. The reversal of 858351061 is 160153858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 451562500 + 406788561 = 21250^2 + 20169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-858351061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 858351061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (858351001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429175530 + 429175531.

It is an arithmetic number, because the mean of its divisors is an integer number (429175531).

Almost surely, 2^858351061 is an apocalyptic number.

It is an amenable number.

858351061 is a deficient number, since it is larger than the sum of its proper divisors (1).

858351061 is an equidigital number, since it uses as much as digits as its factorization.

858351061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 858351061 is about 29297.6289313658. The cubic root of 858351061 is about 950.3603659619.

The spelling of 858351061 in words is "eight hundred fifty-eight million, three hundred fifty-one thousand, sixty-one".