47478553 has 2 divisors, whose sum is σ = 47478554. Its totient is φ = 47478552.

The previous prime is 47478551. The next prime is 47478559. The reversal of 47478553 is 35587474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41062464 + 6416089 = 6408^2 + 2533^2 .

It is a cyclic number.

It is not a de Polignac number, because 47478553 - 2¹ = 47478551 is a prime.

Together with 47478551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (47478551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23739276 + 23739277.

It is an arithmetic number, because the mean of its divisors is an integer number (23739277).

Almost surely, 2^47478553 is an apocalyptic number.

It is an amenable number.

47478553 is a deficient number, since it is larger than the sum of its proper divisors (1).

47478553 is an equidigital number, since it uses as much as digits as its factorization.

47478553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 43.

The square root of 47478553 is about 6890.4682714602. The cubic root of 47478553 is about 362.1033073082.

The spelling of 47478553 in words is "forty-seven million, four hundred seventy-eight thousand, five hundred fifty-three".