47521212 has 12 divisors (see below), whose sum is σ = 110882856. Its totient is φ = 15840400.

The previous prime is 47521211. The next prime is 47521219. The reversal of 47521212 is 21212574.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47521211) 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, 1980039 + ... + 1980062.

It is an arithmetic number, because the mean of its divisors is an integer number (9240238).

Almost surely, 2^47521212 is an apocalyptic number.

It is an amenable number.

47521212 is an abundant number, since it is smaller than the sum of its proper divisors (63361644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47521212 is a wasteful number, since it uses less digits than its factorization.

47521212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3960108 (or 3960106 counting only the distinct ones).

The product of its digits is 1120, while the sum is 24.

The square root of 47521212 is about 6893.5630845014. The cubic root of 47521212 is about 362.2117235649.

Adding to 47521212 its reverse (21212574), we get a palindrome (68733786).

It can be divided in two parts, 475212 and 12, that multiplied together give a square (5702544 = 2388²).

The spelling of 47521212 in words is "forty-seven million, five hundred twenty-one thousand, two hundred twelve".