47801191 has 4 divisors (see below), whose sum is σ = 47971584. Its totient is φ = 47630800.

The previous prime is 47801141. The next prime is 47801197. The reversal of 47801191 is 19110874.

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 47801191 - 2⁷ = 47801063 is a prime.

It is a super-2 number, since 2×47801191² = 4569907722036962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47801197) 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, 84775 + ... + 85336.

It is an arithmetic number, because the mean of its divisors is an integer number (11992896).

Almost surely, 2^47801191 is an apocalyptic number.

47801191 is a deficient number, since it is larger than the sum of its proper divisors (170393).

47801191 is a wasteful number, since it uses less digits than its factorization.

47801191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170392.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 47801191 is about 6913.8405390926. The cubic root of 47801191 is about 362.9216743431.

The spelling of 47801191 in words is "forty-seven million, eight hundred one thousand, one hundred ninety-one".