47825421 has 12 divisors (see below), whose sum is σ = 74178432. Its totient is φ = 27328728.

The previous prime is 47825389. The next prime is 47825429. The reversal of 47825421 is 12452874.

It is not a de Polignac number, because 47825421 - 2⁵ = 47825389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47825429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162525 + ... + 162818.

It is an arithmetic number, because the mean of its divisors is an integer number (6181536).

Almost surely, 2^47825421 is an apocalyptic number.

It is an amenable number.

47825421 is a deficient number, since it is larger than the sum of its proper divisors (26353011).

47825421 is a wasteful number, since it uses less digits than its factorization.

47825421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325360 (or 325353 counting only the distinct ones).

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

The square root of 47825421 is about 6915.5925993367. The cubic root of 47825421 is about 362.9829845783.

The spelling of 47825421 in words is "forty-seven million, eight hundred twenty-five thousand, four hundred twenty-one".