57499447 has 2 divisors, whose sum is σ = 57499448. Its totient is φ = 57499446.

The previous prime is 57499417. The next prime is 57499483. The reversal of 57499447 is 74499475.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57499447 - 2¹¹ = 57497399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57499447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57499417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28749723 + 28749724.

It is an arithmetic number, because the mean of its divisors is an integer number (28749724).

Almost surely, 2^57499447 is an apocalyptic number.

57499447 is a deficient number, since it is larger than the sum of its proper divisors (1).

57499447 is an equidigital number, since it uses as much as digits as its factorization.

57499447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 49.

The square root of 57499447 is about 7582.8389802237. The cubic root of 57499447 is about 385.9708941158.

The spelling of 57499447 in words is "fifty-seven million, four hundred ninety-nine thousand, four hundred forty-seven".