47633521 has 4 divisors (see below), whose sum is σ = 51297652. Its totient is φ = 43969392.

The previous prime is 47633501. The next prime is 47633539. The reversal of 47633521 is 12533674.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12533674 = 2 ⋅6266837.

It can be written as a sum of positive squares in 2 ways, for example, as 16719921 + 30913600 = 4089^2 + 5560^2 .

It is a cyclic number.

It is not a de Polignac number, because 47633521 - 2¹³ = 47625329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47633501) 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, 1832046 + ... + 1832071.

It is an arithmetic number, because the mean of its divisors is an integer number (12824413).

Almost surely, 2^47633521 is an apocalyptic number.

It is an amenable number.

47633521 is a deficient number, since it is larger than the sum of its proper divisors (3664131).

47633521 is a wasteful number, since it uses less digits than its factorization.

47633521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664130.

The product of its digits is 15120, while the sum is 31.

The square root of 47633521 is about 6901.7042098311. The cubic root of 47633521 is about 362.4968427787.

The spelling of 47633521 in words is "forty-seven million, six hundred thirty-three thousand, five hundred twenty-one".