57456509 has 8 divisors (see below), whose sum is σ = 62768928. Its totient is φ = 52158960.

The previous prime is 57456499. The next prime is 57456533. The reversal of 57456509 is 90565475.

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

It is a cyclic number.

It is not a de Polignac number, because 57456509 - 2¹⁶ = 57390973 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 (57456809) 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, 5339 + ... + 11975.

It is an arithmetic number, because the mean of its divisors is an integer number (7846116).

Almost surely, 2^57456509 is an apocalyptic number.

It is an amenable number.

57456509 is a deficient number, since it is larger than the sum of its proper divisors (5312419).

57456509 is a wasteful number, since it uses less digits than its factorization.

57456509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7435.

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 57456509 is about 7580.0071899702. The cubic root of 57456509 is about 385.8747949583.

The spelling of 57456509 in words is "fifty-seven million, four hundred fifty-six thousand, five hundred nine".