85147851 has 16 divisors (see below), whose sum is σ = 114829344. Its totient is φ = 56120064.

The previous prime is 85147847. The next prime is 85147871. The reversal of 85147851 is 15874158.

It is not a de Polignac number, because 85147851 - 2² = 85147847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85147801) 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, 137695 + ... + 138311.

It is an arithmetic number, because the mean of its divisors is an integer number (7176834).

Almost surely, 2^85147851 is an apocalyptic number.

85147851 is a deficient number, since it is larger than the sum of its proper divisors (29681493).

85147851 is a wasteful number, since it uses less digits than its factorization.

85147851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070.

The product of its digits is 44800, while the sum is 39.

The square root of 85147851 is about 9227.5593197768. The cubic root of 85147851 is about 439.9377511800.

The spelling of 85147851 in words is "eighty-five million, one hundred forty-seven thousand, eight hundred fifty-one".