57130073 has 16 divisors (see below), whose sum is σ = 76707456.
Its totient is φ = 41091840.
The previous prime is 57130009. The next prime is 57130103. The reversal of 57130073 is 37003175.
It is a cyclic number.
It is not a de Polignac number, because 57130073 - 26 = 57130009 is a prime.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (57130373) 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, 27536 + ... + 29537.
It is an arithmetic number, because the mean of its divisors is an integer number (4794216).
Almost surely, 257130073 is an apocalyptic number.
It is an amenable number.
57130073 is a deficient number, since it is larger than the sum of its proper divisors (19577383).
57130073 is a wasteful number, since it uses less digits than its factorization.
57130073 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 57104.
The product of its (nonzero) digits is 2205, while the sum is 26.
The square root of 57130073 is about 7558.4438213167.
The cubic root of 57130073 is about 385.1426311355.
The spelling of 57130073 in words is "fifty-seven million, one hundred thirty thousand, seventy-three".