47358221 has 4 divisors (see below), whose sum is σ = 47380092. Its totient is φ = 47336352.

The previous prime is 47358217. The next prime is 47358301. The reversal of 47358221 is 12285374.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12285374 = 2 ⋅6142687.

It can be written as a sum of positive squares in 2 ways, for example, as 24900100 + 22458121 = 4990^2 + 4739^2 .

It is a cyclic number.

It is not a de Polignac number, because 47358221 - 2² = 47358217 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 (47351221) 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 3 ways as a sum of consecutive naturals, for example, 7280 + ... + 12153.

It is an arithmetic number, because the mean of its divisors is an integer number (11845023).

Almost surely, 2^47358221 is an apocalyptic number.

It is an amenable number.

47358221 is a deficient number, since it is larger than the sum of its proper divisors (21871).

47358221 is a wasteful number, since it uses less digits than its factorization.

47358221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21870.

The product of its digits is 13440, while the sum is 32.

The square root of 47358221 is about 6881.7309595770. The cubic root of 47358221 is about 361.7971376434.

The spelling of 47358221 in words is "forty-seven million, three hundred fifty-eight thousand, two hundred twenty-one".