47625221 has 16 divisors (see below), whose sum is σ = 56572800. Its totient is φ = 39227328.

The previous prime is 47625199. The next prime is 47625247. The reversal of 47625221 is 12252674.

It is a happy number.

It is not a de Polignac number, because 47625221 - 2¹⁰ = 47624197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47625421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57035 + ... + 57863.

It is an arithmetic number, because the mean of its divisors is an integer number (3535800).

Almost surely, 2^47625221 is an apocalyptic number.

It is an amenable number.

47625221 is a deficient number, since it is larger than the sum of its proper divisors (8947579).

47625221 is a wasteful number, since it uses less digits than its factorization.

47625221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148.

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

The square root of 47625221 is about 6901.1028828731. The cubic root of 47625221 is about 362.4757868885.

Adding to 47625221 its reverse (12252674), we get a palindrome (59877895).

The spelling of 47625221 in words is "forty-seven million, six hundred twenty-five thousand, two hundred twenty-one".