47534521 has 2 divisors, whose sum is σ = 47534522. Its totient is φ = 47534520.

The previous prime is 47534519. The next prime is 47534527. The reversal of 47534521 is 12543574.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46512400 + 1022121 = 6820^2 + 1011^2 .

It is a cyclic number.

It is not a de Polignac number, because 47534521 - 2¹ = 47534519 is a prime.

Together with 47534519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (47534527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23767260 + 23767261.

It is an arithmetic number, because the mean of its divisors is an integer number (23767261).

Almost surely, 2^47534521 is an apocalyptic number.

It is an amenable number.

47534521 is a deficient number, since it is larger than the sum of its proper divisors (1).

47534521 is an equidigital number, since it uses as much as digits as its factorization.

47534521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 31.

The square root of 47534521 is about 6894.5283377473. The cubic root of 47534521 is about 362.2455346124.

The spelling of 47534521 in words is "forty-seven million, five hundred thirty-four thousand, five hundred twenty-one".