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57131701 = 1123241937
BaseRepresentation
bin1101100111110…
…0001010110101
310222111120221221
43121330022311
5104111203301
65400310341
71262416504
oct331741265
9128446857
1057131701
112a281990
12171723b1
13bab4553
14783283b
155037da1
hex367c2b5

57131701 has 16 divisors (see below), whose sum is σ = 65374848. Its totient is φ = 49420800.

The previous prime is 57131699. The next prime is 57131707. The reversal of 57131701 is 10713175.

It is not a de Polignac number, because 57131701 - 21 = 57131699 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57131707) 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, 60505 + ... + 61441.

It is an arithmetic number, because the mean of its divisors is an integer number (4085928).

Almost surely, 257131701 is an apocalyptic number.

It is an amenable number.

57131701 is a deficient number, since it is larger than the sum of its proper divisors (8243147).

57131701 is a wasteful number, since it uses less digits than its factorization.

57131701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212.

The product of its (nonzero) digits is 735, while the sum is 25.

The square root of 57131701 is about 7558.5515146753. The cubic root of 57131701 is about 385.1462894904.

Adding to 57131701 its reverse (10713175), we get a palindrome (67844876).

The spelling of 57131701 in words is "fifty-seven million, one hundred thirty-one thousand, seven hundred one".

Divisors: 1 11 23 241 253 937 2651 5543 10307 21551 60973 225817 237061 2483987 5193791 57131701