47301221 has 4 divisors (see below), whose sum is σ = 51601344. Its totient is φ = 43001100.

The previous prime is 47301217. The next prime is 47301251. The reversal of 47301221 is 12210374.

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 not a de Polignac number, because 47301221 - 2² = 47301217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47301193 and 47301202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47301211) 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, 2150045 + ... + 2150066.

It is an arithmetic number, because the mean of its divisors is an integer number (12900336).

Almost surely, 2^47301221 is an apocalyptic number.

It is an amenable number.

47301221 is a deficient number, since it is larger than the sum of its proper divisors (4300123).

47301221 is a wasteful number, since it uses less digits than its factorization.

47301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4300122.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 47301221 is about 6877.5883127736. The cubic root of 47301221 is about 361.6519272617.

Adding to 47301221 its reverse (12210374), we get a palindrome (59511595).

The spelling of 47301221 in words is "forty-seven million, three hundred one thousand, two hundred twenty-one".