851285105 has 8 divisors (see below), whose sum is σ = 1114409664. Its totient is φ = 619116400.

The previous prime is 851285087. The next prime is 851285129. The reversal of 851285105 is 501582158.

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

It is not a de Polignac number, because 851285105 - 2⁶ = 851285041 is a prime.

It is a super-2 number, since 2×851285105² = 1449372659989722050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7738901 + ... + 7739010.

It is an arithmetic number, because the mean of its divisors is an integer number (139301208).

Almost surely, 2^851285105 is an apocalyptic number.

It is an amenable number.

851285105 is a deficient number, since it is larger than the sum of its proper divisors (263124559).

851285105 is a wasteful number, since it uses less digits than its factorization.

851285105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15477927.

The product of its (nonzero) digits is 16000, while the sum is 35.

The square root of 851285105 is about 29176.7905191781. The cubic root of 851285105 is about 947.7453847032.

The spelling of 851285105 in words is "eight hundred fifty-one million, two hundred eighty-five thousand, one hundred five".