57405457 has 4 divisors (see below), whose sum is σ = 57634416. Its totient is φ = 57176500.

The previous prime is 57405451. The next prime is 57405461. The reversal of 57405457 is 75450475.

57405457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57405457 - 2³ = 57405449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57405451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114103 + ... + 114604.

It is an arithmetic number, because the mean of its divisors is an integer number (14408604).

Almost surely, 2^57405457 is an apocalyptic number.

It is an amenable number.

57405457 is a deficient number, since it is larger than the sum of its proper divisors (228959).

57405457 is a wasteful number, since it uses less digits than its factorization.

57405457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228958.

The product of its (nonzero) digits is 98000, while the sum is 37.

The square root of 57405457 is about 7576.6388986146. The cubic root of 57405457 is about 385.7604736054.

The spelling of 57405457 in words is "fifty-seven million, four hundred five thousand, four hundred fifty-seven".