47641521 has 4 divisors (see below), whose sum is σ = 63522032. Its totient is φ = 31761012.

The previous prime is 47641511. The next prime is 47641523. The reversal of 47641521 is 12514674.

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 not a de Polignac number, because 47641521 - 2¹⁵ = 47608753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47641523) 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, 7940251 + ... + 7940256.

It is an arithmetic number, because the mean of its divisors is an integer number (15880508).

Almost surely, 2^47641521 is an apocalyptic number.

It is an amenable number.

47641521 is a deficient number, since it is larger than the sum of its proper divisors (15880511).

47641521 is a wasteful number, since it uses less digits than its factorization.

47641521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15880510.

The product of its digits is 6720, while the sum is 30.

The square root of 47641521 is about 6902.2837524982. The cubic root of 47641521 is about 362.5171352978.

The spelling of 47641521 in words is "forty-seven million, six hundred forty-one thousand, five hundred twenty-one".