47020187 has 4 divisors (see below), whose sum is σ = 47459736. Its totient is φ = 46580640.

The previous prime is 47020159. The next prime is 47020241. The reversal of 47020187 is 78102074.

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 47020187 - 2¹² = 47016091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40020187) 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, 219614 + ... + 219827.

It is an arithmetic number, because the mean of its divisors is an integer number (11864934).

Almost surely, 2^47020187 is an apocalyptic number.

47020187 is a deficient number, since it is larger than the sum of its proper divisors (439549).

47020187 is a wasteful number, since it uses less digits than its factorization.

47020187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439548.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 47020187 is about 6857.1267306358. The cubic root of 47020187 is about 360.9342682581.

The spelling of 47020187 in words is "forty-seven million, twenty thousand, one hundred eighty-seven".