147851 has 4 divisors (see below), whose sum is σ = 161304. Its totient is φ = 134400.

The previous prime is 147827. The next prime is 147853. The reversal of 147851 is 158741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158741 = 11 ⋅14431.

It is a cyclic number.

It is not a de Polignac number, because 147851 - 2⁶ = 147787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 147851.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 147851.

It is not an unprimeable number, because it can be changed into a prime (147853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6710 + ... + 6731.

It is an arithmetic number, because the mean of its divisors is an integer number (40326).

2¹⁴⁷⁸⁵¹ is an apocalyptic number.

147851 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

147851 is a deficient number, since it is larger than the sum of its proper divisors (13453).

147851 is a wasteful number, since it uses less digits than its factorization.

147851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13452.

The product of its digits is 1120, while the sum is 26.

The square root of 147851 is about 384.5139789396. The cubic root of 147851 is about 52.8779677239.

The spelling of 147851 in words is "one hundred forty-seven thousand, eight hundred fifty-one".