85021961 has 8 divisors (see below), whose sum is σ = 88872000. Its totient is φ = 81184752.

The previous prime is 85021949. The next prime is 85021969. The reversal of 85021961 is 16912058.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85021961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85021969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11915 + ... + 17663.

It is an arithmetic number, because the mean of its divisors is an integer number (11109000).

Almost surely, 2^85021961 is an apocalyptic number.

It is an amenable number.

85021961 is a deficient number, since it is larger than the sum of its proper divisors (3850039).

85021961 is a wasteful number, since it uses less digits than its factorization.

85021961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6415.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 85021961 is about 9220.7353828206. The cubic root of 85021961 is about 439.7208301420.

The spelling of 85021961 in words is "eighty-five million, twenty-one thousand, nine hundred sixty-one".