57408447 has 12 divisors (see below), whose sum is σ = 77431640. Its totient is φ = 37830672.

The previous prime is 57408419. The next prime is 57408499. The reversal of 57408447 is 74480475.

It is not a de Polignac number, because 57408447 - 2¹⁴ = 57392063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57408647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136804 + ... + 137222.

Almost surely, 2^57408447 is an apocalyptic number.

57408447 is a deficient number, since it is larger than the sum of its proper divisors (20023193).

57408447 is an equidigital number, since it uses as much as digits as its factorization.

57408447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 39.

The square root of 57408447 is about 7576.8362130905. The cubic root of 57408447 is about 385.7671710162.

The spelling of 57408447 in words is "fifty-seven million, four hundred eight thousand, four hundred forty-seven".