47224581 has 4 divisors (see below), whose sum is σ = 62966112. Its totient is φ = 31483052.

The previous prime is 47224571. The next prime is 47224601. The reversal of 47224581 is 18542274.

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 47224581 - 2⁵ = 47224549 is a prime.

It is a super-2 number, since 2×47224581² = 4460322101251122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47224531) 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, 7870761 + ... + 7870766.

It is an arithmetic number, because the mean of its divisors is an integer number (15741528).

Almost surely, 2^47224581 is an apocalyptic number.

It is an amenable number.

47224581 is a deficient number, since it is larger than the sum of its proper divisors (15741531).

47224581 is a wasteful number, since it uses less digits than its factorization.

47224581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15741530.

The product of its digits is 17920, while the sum is 33.

The square root of 47224581 is about 6872.0143335124. The cubic root of 47224581 is about 361.4564989962.

The spelling of 47224581 in words is "forty-seven million, two hundred twenty-four thousand, five hundred eighty-one".