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57130073 = 7111357073
BaseRepresentation
bin1101100111101…
…1110001011001
310222111111201122
43121323301121
5104111130243
65400255025
71262411660
oct331736131
9128444648
1057130073
112a280740
1217171475
13bab38a0
147831dd7
155037668
hex367bc59

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".

Divisors: 1 7 11 13 77 91 143 1001 57073 399511 627803 741949 4394621 5193643 8161439 57130073