47460221 has 4 divisors (see below), whose sum is σ = 47751552. Its totient is φ = 47168892.

The previous prime is 47460199. The next prime is 47460227. The reversal of 47460221 is 12206474.

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 a de Polignac number, because none of the positive numbers 2^k-47460221 is a prime.

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 (47460227) 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, 145421 + ... + 145746.

It is an arithmetic number, because the mean of its divisors is an integer number (11937888).

Almost surely, 2^47460221 is an apocalyptic number.

It is an amenable number.

47460221 is a deficient number, since it is larger than the sum of its proper divisors (291331).

47460221 is a wasteful number, since it uses less digits than its factorization.

47460221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291330.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 47460221 is about 6889.1378996214. The cubic root of 47460221 is about 362.0566972640.

Adding to 47460221 its reverse (12206474), we get a palindrome (59666695).

The spelling of 47460221 in words is "forty-seven million, four hundred sixty thousand, two hundred twenty-one".