47426521 has 2 divisors, whose sum is σ = 47426522. Its totient is φ = 47426520.

The previous prime is 47426473. The next prime is 47426531. The reversal of 47426521 is 12562474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29278921 + 18147600 = 5411^2 + 4260^2 .

It is a cyclic number.

It is not a de Polignac number, because 47426521 - 2¹¹ = 47424473 is a prime.

It is not a weakly prime, because it can be changed into another prime (47426531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23713260 + 23713261.

It is an arithmetic number, because the mean of its divisors is an integer number (23713261).

Almost surely, 2^47426521 is an apocalyptic number.

It is an amenable number.

47426521 is a deficient number, since it is larger than the sum of its proper divisors (1).

47426521 is an equidigital number, since it uses as much as digits as its factorization.

47426521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 31.

The square root of 47426521 is about 6886.6915859504. The cubic root of 47426521 is about 361.9709819744.

Adding to 47426521 its reverse (12562474), we get a palindrome (59988995).

The spelling of 47426521 in words is "forty-seven million, four hundred twenty-six thousand, five hundred twenty-one".