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57143801 = 1113259521
BaseRepresentation
bin1101100111111…
…1000111111001
310222112012120002
43121333013321
5104112100201
65400442345
71262500001
oct331770771
9128465502
1057143801
112a28aa90
12171793b5
13bab9c00
147837001
15503b76b
hex367f1f9

57143801 has 24 divisors (see below), whose sum is σ = 68778720. Its totient is φ = 47049600.

The previous prime is 57143797. The next prime is 57143813. The reversal of 57143801 is 10834175.

It is not a de Polignac number, because 57143801 - 22 = 57143797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57143101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109421 + ... + 109941.

It is an arithmetic number, because the mean of its divisors is an integer number (2865780).

Almost surely, 257143801 is an apocalyptic number.

It is an amenable number.

57143801 is a deficient number, since it is larger than the sum of its proper divisors (11634919).

57143801 is a wasteful number, since it uses less digits than its factorization.

57143801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 57143801 is about 7559.3518902086. The cubic root of 57143801 is about 385.1734777885.

Adding to 57143801 its reverse (10834175), we get a palindrome (67977976).

The spelling of 57143801 in words is "fifty-seven million, one hundred forty-three thousand, eight hundred one".

Divisors: 1 11 13 59 143 169 521 649 767 1859 5731 6773 8437 9971 30739 74503 88049 109681 338129 399607 968539 4395677 5194891 57143801