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85775311 is a prime number
BaseRepresentation
bin1010001110011…
…01001111001111
312222101211121101
411013031033033
5133424302221
612302243531
72061035536
oct507151717
9188354541
1085775311
1144466296
12248865a7
1314a0302b
14b56b31d
1577e4d91
hex51cd3cf

85775311 has 2 divisors, whose sum is σ = 85775312. Its totient is φ = 85775310.

The previous prime is 85775309. The next prime is 85775317. The reversal of 85775311 is 11357758.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85775311 - 21 = 85775309 is a prime.

Together with 85775309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85775317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42887655 + 42887656.

It is an arithmetic number, because the mean of its divisors is an integer number (42887656).

Almost surely, 285775311 is an apocalyptic number.

85775311 is a deficient number, since it is larger than the sum of its proper divisors (1).

85775311 is an equidigital number, since it uses as much as digits as its factorization.

85775311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29400, while the sum is 37.

The square root of 85775311 is about 9261.4961534301. The cubic root of 85775311 is about 441.0157507619.

The spelling of 85775311 in words is "eighty-five million, seven hundred seventy-five thousand, three hundred eleven".