85145961 has 8 divisors (see below), whose sum is σ = 114105024. Its totient is φ = 56475440.

The previous prime is 85145947. The next prime is 85145981. The reversal of 85145961 is 16954158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85145961 - 2⁹ = 85145449 is a prime.

It is a super-2 number, since 2×85145961² = 14499669349227042, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85145981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71445 + ... + 72626.

It is an arithmetic number, because the mean of its divisors is an integer number (14263128).

Almost surely, 2^85145961 is an apocalyptic number.

It is an amenable number.

85145961 is a deficient number, since it is larger than the sum of its proper divisors (28959063).

85145961 is a wasteful number, since it uses less digits than its factorization.

85145961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144271.

The product of its digits is 43200, while the sum is 39.

The square root of 85145961 is about 9227.4569085962. The cubic root of 85145961 is about 439.9344961027.

The spelling of 85145961 in words is "eighty-five million, one hundred forty-five thousand, nine hundred sixty-one".