851005441 has 16 divisors (see below), whose sum is σ = 1003544640. Its totient is φ = 711443520.

The previous prime is 851005433. The next prime is 851005489. The reversal of 851005441 is 144500158.

It is a cyclic number.

It is not a de Polignac number, because 851005441 - 2³ = 851005433 is a prime.

It is a super-2 number, since 2×851005441² = 1448420521223208962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (851006441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27406 + ... + 49528.

It is an arithmetic number, because the mean of its divisors is an integer number (62721540).

Almost surely, 2^851005441 is an apocalyptic number.

It is an amenable number.

851005441 is a deficient number, since it is larger than the sum of its proper divisors (152539199).

851005441 is a wasteful number, since it uses less digits than its factorization.

851005441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22416.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 851005441 is about 29171.9975490195. The cubic root of 851005441 is about 947.6415889659.

Adding to 851005441 its reverse (144500158), we get a palindrome (995505599).

The spelling of 851005441 in words is "eight hundred fifty-one million, five thousand, four hundred forty-one".