850905053 has 2 divisors, whose sum is σ = 850905054. Its totient is φ = 850905052.

The previous prime is 850905023. The next prime is 850905067. The reversal of 850905053 is 350509058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 445969924 + 404935129 = 21118^2 + 20123^2 .

It is a cyclic number.

It is not a de Polignac number, because 850905053 - 2¹² = 850900957 is a prime.

It is equal to p_43625843 and since 850905053 and 43625843 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (850905023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425452526 + 425452527.

It is an arithmetic number, because the mean of its divisors is an integer number (425452527).

Almost surely, 2^850905053 is an apocalyptic number.

It is an amenable number.

850905053 is a deficient number, since it is larger than the sum of its proper divisors (1).

850905053 is an equidigital number, since it uses as much as digits as its factorization.

850905053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 850905053 is about 29170.2768756143. The cubic root of 850905053 is about 947.6043249720.

The spelling of 850905053 in words is "eight hundred fifty million, nine hundred five thousand, fifty-three".