47321851 has 4 divisors (see below), whose sum is σ = 47694592. Its totient is φ = 46949112.

The previous prime is 47321843. The next prime is 47321861. The reversal of 47321851 is 15812374.

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 47321851 - 2³ = 47321843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47321821) 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, 186180 + ... + 186433.

It is an arithmetic number, because the mean of its divisors is an integer number (11923648).

Almost surely, 2^47321851 is an apocalyptic number.

47321851 is a deficient number, since it is larger than the sum of its proper divisors (372741).

47321851 is a wasteful number, since it uses less digits than its factorization.

47321851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372740.

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

The square root of 47321851 is about 6879.0879482676. The cubic root of 47321851 is about 361.7044966929.

The spelling of 47321851 in words is "forty-seven million, three hundred twenty-one thousand, eight hundred fifty-one".