57866449 has 3 divisors (see below), whose sum is σ = 57874057. Its totient is φ = 57858842.

The previous prime is 57866423. The next prime is 57866503. The reversal of 57866449 is 94466875.

The square root of 57866449 is 7607.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 57866449 - 2⁹ = 57865937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57866749) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3804 + ... + 11410.

Almost surely, 2^57866449 is an apocalyptic number.

57866449 is the 7607-th square number.

57866449 is the 3804-th centered octagonal number.

It is an amenable number.

57866449 is a deficient number, since it is larger than the sum of its proper divisors (7608).

57866449 is an frugal number, since it uses more digits than its factorization.

57866449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15214 (or 7607 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The cubic root of 57866449 is about 386.7903326037.

Multiplying 57866449 by its sum of digits (49), we get a square (2835456001 = 53249²).

The spelling of 57866449 in words is "fifty-seven million, eight hundred sixty-six thousand, four hundred forty-nine".