851244151 has 4 divisors (see below), whose sum is σ = 851422672. Its totient is φ = 851065632.

The previous prime is 851244131. The next prime is 851244169. The reversal of 851244151 is 151442158.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 851244151 - 2²⁷ = 717026423 is a prime.

It is a super-2 number, since 2×851244151² = 1449233209223421602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851244101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81906 + ... + 91711.

It is an arithmetic number, because the mean of its divisors is an integer number (212855668).

Almost surely, 2^851244151 is an apocalyptic number.

851244151 is a deficient number, since it is larger than the sum of its proper divisors (178521).

851244151 is a wasteful number, since it uses less digits than its factorization.

851244151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178520.

The product of its digits is 6400, while the sum is 31.

The square root of 851244151 is about 29176.0886857714. The cubic root of 851244151 is about 947.7301862749.

The spelling of 851244151 in words is "eight hundred fifty-one million, two hundred forty-four thousand, one hundred fifty-one".