47250121 has 2 divisors, whose sum is σ = 47250122. Its totient is φ = 47250120.

The previous prime is 47250103. The next prime is 47250143. The reversal of 47250121 is 12105274.

It is a happy number.

It is an a-pointer prime, because the next prime (47250143) can be obtained adding 47250121 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23863225 + 23386896 = 4885^2 + 4836^2 .

It is a cyclic number.

It is not a de Polignac number, because 47250121 - 2¹⁷ = 47119049 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 47250092 and 47250101.

It is not a weakly prime, because it can be changed into another prime (47250101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23625060 + 23625061.

It is an arithmetic number, because the mean of its divisors is an integer number (23625061).

Almost surely, 2^47250121 is an apocalyptic number.

It is an amenable number.

47250121 is a deficient number, since it is larger than the sum of its proper divisors (1).

47250121 is an equidigital number, since it uses as much as digits as its factorization.

47250121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 47250121 is about 6873.8723438830. The cubic root of 47250121 is about 361.5216482262.

Adding to 47250121 its reverse (12105274), we get a palindrome (59355395).

The spelling of 47250121 in words is "forty-seven million, two hundred fifty thousand, one hundred twenty-one".