57004509 has 4 divisors (see below), whose sum is σ = 76006016. Its totient is φ = 38003004.

The previous prime is 57004481. The next prime is 57004513. The reversal of 57004509 is 90540075.

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 de Polignac number, because none of the positive numbers 2^k-57004509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57004529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9500749 + ... + 9500754.

It is an arithmetic number, because the mean of its divisors is an integer number (19001504).

Almost surely, 2^57004509 is an apocalyptic number.

It is an amenable number.

57004509 is a deficient number, since it is larger than the sum of its proper divisors (19001507).

57004509 is a wasteful number, since it uses less digits than its factorization.

57004509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19001506.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 57004509 is about 7550.1330451854. The cubic root of 57004509 is about 384.8602607499.

The spelling of 57004509 in words is "fifty-seven million, four thousand, five hundred nine".