851755061 has 2 divisors, whose sum is σ = 851755062. Its totient is φ = 851755060.

The previous prime is 851755043. The next prime is 851755081. The reversal of 851755061 is 160557158.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 604668100 + 247086961 = 24590^2 + 15719^2 .

It is a cyclic number.

It is not a de Polignac number, because 851755061 - 2¹⁴ = 851738677 is a prime.

It is a super-2 number, since 2×851755061² = 1450973367878227442, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (851755081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425877530 + 425877531.

It is an arithmetic number, because the mean of its divisors is an integer number (425877531).

Almost surely, 2^851755061 is an apocalyptic number.

It is an amenable number.

851755061 is a deficient number, since it is larger than the sum of its proper divisors (1).

851755061 is an equidigital number, since it uses as much as digits as its factorization.

851755061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42000, while the sum is 38.

The square root of 851755061 is about 29184.8430011196. The cubic root of 851755061 is about 947.9197550722.

The spelling of 851755061 in words is "eight hundred fifty-one million, seven hundred fifty-five thousand, sixty-one".