851086541 has 4 divisors (see below), whose sum is σ = 852257952. Its totient is φ = 849915132.

The previous prime is 851086529. The next prime is 851086591. The reversal of 851086541 is 145680158.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 851086541 - 2¹⁸ = 850824397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 851086495 and 851086504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851086501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584615 + ... + 586068.

It is an arithmetic number, because the mean of its divisors is an integer number (213064488).

Almost surely, 2^851086541 is an apocalyptic number.

It is an amenable number.

851086541 is a deficient number, since it is larger than the sum of its proper divisors (1171411).

851086541 is a wasteful number, since it uses less digits than its factorization.

851086541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171410.

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 851086541 is about 29173.3875475578. The cubic root of 851086541 is about 947.6716911204.

The spelling of 851086541 in words is "eight hundred fifty-one million, eighty-six thousand, five hundred forty-one".