85151169 has 20 divisors (see below), whose sum is σ = 129913344. Its totient is φ = 55557144.

The previous prime is 85151161. The next prime is 85151173. The reversal of 85151169 is 96115158.

85151169 is a `hidden beast` number, since 85 + 1 + 511 + 69 = 666.

It is not a de Polignac number, because 85151169 - 2³ = 85151161 is a prime.

It is a super-2 number, since 2×85151169² = 14501443164133122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85151161) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7377 + ... + 14990.

Almost surely, 2^85151169 is an apocalyptic number.

It is an amenable number.

85151169 is a deficient number, since it is larger than the sum of its proper divisors (44762175).

85151169 is a wasteful number, since it uses less digits than its factorization.

85151169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22426 (or 22417 counting only the distinct ones).

The product of its digits is 10800, while the sum is 36.

The square root of 85151169 is about 9227.7391055448. The cubic root of 85151169 is about 439.9434655325.

The spelling of 85151169 in words is "eighty-five million, one hundred fifty-one thousand, one hundred sixty-nine".