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57002801 = 448112721
BaseRepresentation
bin1101100101110…
…0101100110001
310222021001010212
43121130230301
5104043042201
65353433505
71261341632
oct331345461
9128231125
1057002801
112a1a4059
121710b895
13ba6a98b
1477db889
15500eabb
hex365cb31

57002801 has 4 divisors (see below), whose sum is σ = 57020004. Its totient is φ = 56985600.

The previous prime is 57002797. The next prime is 57002849. The reversal of 57002801 is 10820075.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47541025 + 9461776 = 6895^2 + 3076^2 .

It is a cyclic number.

It is not a de Polignac number, because 57002801 - 22 = 57002797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57002861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1880 + ... + 10841.

It is an arithmetic number, because the mean of its divisors is an integer number (14255001).

Almost surely, 257002801 is an apocalyptic number.

It is an amenable number.

57002801 is a deficient number, since it is larger than the sum of its proper divisors (17203).

57002801 is a wasteful number, since it uses less digits than its factorization.

57002801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17202.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 57002801 is about 7550.0199337485. The cubic root of 57002801 is about 384.8564169143.

Adding to 57002801 its reverse (10820075), we get a palindrome (67822876).

The spelling of 57002801 in words is "fifty-seven million, two thousand, eight hundred one".

Divisors: 1 4481 12721 57002801