57507009 has 16 divisors (see below), whose sum is σ = 87861120. Its totient is φ = 32774400.

The previous prime is 57507001. The next prime is 57507011. The reversal of 57507009 is 90070575.

It is not a de Polignac number, because 57507009 - 2³ = 57507001 is a prime.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (57507001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5007 + ... + 11835.

It is an arithmetic number, because the mean of its divisors is an integer number (5491320).

Almost surely, 2^57507009 is an apocalyptic number.

It is an amenable number.

57507009 is a deficient number, since it is larger than the sum of its proper divisors (30354111).

57507009 is a wasteful number, since it uses less digits than its factorization.

57507009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7240.

The product of its (nonzero) digits is 11025, while the sum is 33.

The square root of 57507009 is about 7583.3375897424. The cubic root of 57507009 is about 385.9878136058.

The spelling of 57507009 in words is "fifty-seven million, five hundred seven thousand, nine".