47123851 has 4 divisors (see below), whose sum is σ = 47200600. Its totient is φ = 47047104.

The previous prime is 47123827. The next prime is 47123887. The reversal of 47123851 is 15832174.

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 47123851 - 2¹⁷ = 46992779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47123891) 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, 37446 + ... + 38683.

It is an arithmetic number, because the mean of its divisors is an integer number (11800150).

Almost surely, 2^47123851 is an apocalyptic number.

47123851 is a deficient number, since it is larger than the sum of its proper divisors (76749).

47123851 is an equidigital number, since it uses as much as digits as its factorization.

47123851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76748.

The product of its digits is 6720, while the sum is 31.

The square root of 47123851 is about 6864.6814201389. The cubic root of 47123851 is about 361.1993205646.

It can be divided in two parts, 47123 and 851, that added together give a palindrome (47974).

The spelling of 47123851 in words is "forty-seven million, one hundred twenty-three thousand, eight hundred fifty-one".