57047449 has 2 divisors, whose sum is σ = 57047450. Its totient is φ = 57047448.

The previous prime is 57047447. The next prime is 57047453. The reversal of 57047449 is 94474075.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56250000 + 797449 = 7500^2 + 893^2 .

It is a cyclic number.

It is not a de Polignac number, because 57047449 - 2¹ = 57047447 is a prime.

It is a super-2 number, since 2×57047449² = 6508822874815202, which contains 22 as substring.

Together with 57047447, it forms a pair of twin primes.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (57047447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28523724 + 28523725.

It is an arithmetic number, because the mean of its divisors is an integer number (28523725).

Almost surely, 2^57047449 is an apocalyptic number.

It is an amenable number.

57047449 is a deficient number, since it is larger than the sum of its proper divisors (1).

57047449 is an equidigital number, since it uses as much as digits as its factorization.

57047449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 57047449 is about 7552.9761683723. The cubic root of 57047449 is about 384.9568715392.

The spelling of 57047449 in words is "fifty-seven million, forty-seven thousand, four hundred forty-nine".