851132141 has 4 divisors (see below), whose sum is σ = 867191292. Its totient is φ = 835072992.

The previous prime is 851132131. The next prime is 851132143. The reversal of 851132141 is 141231158.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141231158 = 2 ⋅70615579.

It can be written as a sum of positive squares in 2 ways, for example, as 624750025 + 226382116 = 24995^2 + 15046^2 .

It is a cyclic number.

It is not a de Polignac number, because 851132141 - 2⁶ = 851132077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 851132141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851132143) 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, 8029496 + ... + 8029601.

It is an arithmetic number, because the mean of its divisors is an integer number (216797823).

Almost surely, 2^851132141 is an apocalyptic number.

It is an amenable number.

851132141 is a deficient number, since it is larger than the sum of its proper divisors (16059151).

851132141 is a wasteful number, since it uses less digits than its factorization.

851132141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16059150.

The product of its digits is 960, while the sum is 26.

The square root of 851132141 is about 29174.1690712863. The cubic root of 851132141 is about 947.6886157829.

Adding to 851132141 its reverse (141231158), we get a palindrome (992363299).

The spelling of 851132141 in words is "eight hundred fifty-one million, one hundred thirty-two thousand, one hundred forty-one".