47025421 has 4 divisors (see below), whose sum is σ = 47040732. Its totient is φ = 47010112.

The previous prime is 47025413. The next prime is 47025439. The reversal of 47025421 is 12452074.

47025421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6702921 + 40322500 = 2589^2 + 6350^2 .

It is a cyclic number.

It is not a de Polignac number, because 47025421 - 2³ = 47025413 is a prime.

It is a super-2 number, since 2×47025421² = 4422780440454482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47025221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276 + ... + 9781.

It is an arithmetic number, because the mean of its divisors is an integer number (11760183).

Almost surely, 2^47025421 is an apocalyptic number.

It is an amenable number.

47025421 is a deficient number, since it is larger than the sum of its proper divisors (15311).

47025421 is a wasteful number, since it uses less digits than its factorization.

47025421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15310.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 47025421 is about 6857.5083667466. The cubic root of 47025421 is about 360.9476600939.

Adding to 47025421 its reverse (12452074), we get a palindrome (59477495).

The spelling of 47025421 in words is "forty-seven million, twenty-five thousand, four hundred twenty-one".