47421401 has 2 divisors, whose sum is σ = 47421402. Its totient is φ = 47421400.

The previous prime is 47421371. The next prime is 47421403. The reversal of 47421401 is 10412474.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37027225 + 10394176 = 6085^2 + 3224^2 .

It is a cyclic number.

It is not a de Polignac number, because 47421401 - 2⁶ = 47421337 is a prime.

Together with 47421403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47421403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23710700 + 23710701.

It is an arithmetic number, because the mean of its divisors is an integer number (23710701).

Almost surely, 2^47421401 is an apocalyptic number.

It is an amenable number.

47421401 is a deficient number, since it is larger than the sum of its proper divisors (1).

47421401 is an equidigital number, since it uses as much as digits as its factorization.

47421401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 47421401 is about 6886.3198444452. The cubic root of 47421401 is about 361.9579558020.

Adding to 47421401 its reverse (10412474), we get a palindrome (57833875).

The spelling of 47421401 in words is "forty-seven million, four hundred twenty-one thousand, four hundred one".