47526221 has 4 divisors (see below), whose sum is σ = 47652000. Its totient is φ = 47400444.

The previous prime is 47526197. The next prime is 47526229. The reversal of 47526221 is 12262574.

It is a happy number.

47526221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47526221 - 2¹⁰ = 47525197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47526229) 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 3 ways as a sum of consecutive naturals, for example, 62321 + ... + 63078.

It is an arithmetic number, because the mean of its divisors is an integer number (11913000).

Almost surely, 2^47526221 is an apocalyptic number.

It is an amenable number.

47526221 is a deficient number, since it is larger than the sum of its proper divisors (125779).

47526221 is a wasteful number, since it uses less digits than its factorization.

47526221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125778.

The product of its digits is 6720, while the sum is 29.

The square root of 47526221 is about 6893.9263848695. The cubic root of 47526221 is about 362.2244494944.

Adding to 47526221 its reverse (12262574), we get a palindrome (59788795).

The spelling of 47526221 in words is "forty-seven million, five hundred twenty-six thousand, two hundred twenty-one".