47244021 has 8 divisors (see below), whose sum is σ = 68718624. Its totient is φ = 28632720.

The previous prime is 47244019. The next prime is 47244023. The reversal of 47244021 is 12044274.

It is an interprime number because it is at equal distance from previous prime (47244019) and next prime (47244023).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47244021 - 2¹ = 47244019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47243982 and 47244000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47244023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715786 + ... + 715851.

It is an arithmetic number, because the mean of its divisors is an integer number (8589828).

Almost surely, 2^47244021 is an apocalyptic number.

It is an amenable number.

47244021 is a deficient number, since it is larger than the sum of its proper divisors (21474603).

47244021 is a wasteful number, since it uses less digits than its factorization.

47244021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431651.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 47244021 is about 6873.4286204194. The cubic root of 47244021 is about 361.5060900512.

Adding to 47244021 its reverse (12044274), we get a palindrome (59288295).

The spelling of 47244021 in words is "forty-seven million, two hundred forty-four thousand, twenty-one".