47474521 has 4 divisors (see below), whose sum is σ = 49973200. Its totient is φ = 44975844.

The previous prime is 47474513. The next prime is 47474549. The reversal of 47474521 is 12547474.

It is a happy number.

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 47474521 - 2³ = 47474513 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47474501) 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, 1249311 + ... + 1249348.

It is an arithmetic number, because the mean of its divisors is an integer number (12493300).

Almost surely, 2^47474521 is an apocalyptic number.

It is an amenable number.

47474521 is a deficient number, since it is larger than the sum of its proper divisors (2498679).

47474521 is a wasteful number, since it uses less digits than its factorization.

47474521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498678.

The product of its digits is 31360, while the sum is 34.

The square root of 47474521 is about 6890.1756871650. The cubic root of 47474521 is about 362.0930567720.

The spelling of 47474521 in words is "forty-seven million, four hundred seventy-four thousand, five hundred twenty-one".