47486221 has 2 divisors, whose sum is σ = 47486222. Its totient is φ = 47486220.

The previous prime is 47486213. The next prime is 47486239. The reversal of 47486221 is 12268474.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28249225 + 19236996 = 5315^2 + 4386^2 .

It is a cyclic number.

It is not a de Polignac number, because 47486221 - 2³ = 47486213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47486521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23743110 + 23743111.

It is an arithmetic number, because the mean of its divisors is an integer number (23743111).

Almost surely, 2^47486221 is an apocalyptic number.

It is an amenable number.

47486221 is a deficient number, since it is larger than the sum of its proper divisors (1).

47486221 is an equidigital number, since it uses as much as digits as its factorization.

47486221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 34.

The square root of 47486221 is about 6891.0246698151. The cubic root of 47486221 is about 362.1228000301.

The spelling of 47486221 in words is "forty-seven million, four hundred eighty-six thousand, two hundred twenty-one".