57481663 has 2 divisors, whose sum is σ = 57481664. Its totient is φ = 57481662.

The previous prime is 57481661. The next prime is 57481679. The reversal of 57481663 is 36618475.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57481663 - 2¹ = 57481661 is a prime.

Together with 57481661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57481661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28740831 + 28740832.

It is an arithmetic number, because the mean of its divisors is an integer number (28740832).

Almost surely, 2^57481663 is an apocalyptic number.

57481663 is a deficient number, since it is larger than the sum of its proper divisors (1).

57481663 is an equidigital number, since it uses as much as digits as its factorization.

57481663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 57481663 is about 7581.6662416648. Note that the first 3 decimals coincide. The cubic root of 57481663 is about 385.9310977089.

The spelling of 57481663 in words is "fifty-seven million, four hundred eighty-one thousand, six hundred sixty-three".