47516421 has 8 divisors (see below), whose sum is σ = 64118880. Its totient is φ = 31295792.

The previous prime is 47516401. The next prime is 47516431. The reversal of 47516421 is 12461574.

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

It is a cyclic number.

It is not a de Polignac number, because 47516421 - 2¹⁰ = 47515397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47516401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95166 + ... + 95663.

It is an arithmetic number, because the mean of its divisors is an integer number (8014860).

Almost surely, 2^47516421 is an apocalyptic number.

It is an amenable number.

47516421 is a deficient number, since it is larger than the sum of its proper divisors (16602459).

47516421 is a wasteful number, since it uses less digits than its factorization.

47516421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190915.

The product of its digits is 6720, while the sum is 30.

The square root of 47516421 is about 6893.2155776531. The cubic root of 47516421 is about 362.1995506523.

Adding to 47516421 its reverse (12461574), we get a palindrome (59977995).

The spelling of 47516421 in words is "forty-seven million, five hundred sixteen thousand, four hundred twenty-one".