47521091 has 8 divisors (see below), whose sum is σ = 48780144. Its totient is φ = 46266880.

The previous prime is 47521079. The next prime is 47521121. The reversal of 47521091 is 19012574.

47521091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47521091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47521031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27155 + ... + 28851.

It is an arithmetic number, because the mean of its divisors is an integer number (6097518).

Almost surely, 2^47521091 is an apocalyptic number.

47521091 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

47521091 is a deficient number, since it is larger than the sum of its proper divisors (1259053).

47521091 is a wasteful number, since it uses less digits than its factorization.

47521091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 47521091 is about 6893.5543081925. The cubic root of 47521091 is about 362.2114161397.

The spelling of 47521091 in words is "forty-seven million, five hundred twenty-one thousand, ninety-one".