47081851 has 4 divisors (see below), whose sum is σ = 49128912. Its totient is φ = 45034792.

The previous prime is 47081849. The next prime is 47081869. The reversal of 47081851 is 15818074.

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 47081851 - 2¹ = 47081849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47081051) 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, 1023496 + ... + 1023541.

It is an arithmetic number, because the mean of its divisors is an integer number (12282228).

Almost surely, 2^47081851 is an apocalyptic number.

47081851 is a deficient number, since it is larger than the sum of its proper divisors (2047061).

47081851 is a wasteful number, since it uses less digits than its factorization.

47081851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047060.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 47081851 is about 6861.6216013418. The cubic root of 47081851 is about 361.0919801533.

The spelling of 47081851 in words is "forty-seven million, eighty-one thousand, eight hundred fifty-one".