57457509 has 8 divisors (see below), whose sum is σ = 76648992. Its totient is φ = 38285520.

The previous prime is 57457507. The next prime is 57457513. The reversal of 57457509 is 90575475.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57457509 - 2¹ = 57457507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57457507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4687 + ... + 11699.

It is an arithmetic number, because the mean of its divisors is an integer number (9581124).

Almost surely, 2^57457509 is an apocalyptic number.

It is an amenable number.

57457509 is a deficient number, since it is larger than the sum of its proper divisors (19191483).

57457509 is a wasteful number, since it uses less digits than its factorization.

57457509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9747.

The product of its (nonzero) digits is 220500, while the sum is 42.

The square root of 57457509 is about 7580.0731526813. The cubic root of 57457509 is about 385.8770335938.

The spelling of 57457509 in words is "fifty-seven million, four hundred fifty-seven thousand, five hundred nine".