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57805053 = 388121871
BaseRepresentation
bin1101110010000…
…0100011111101
311000202210121220
43130200203331
5104244230203
65422543553
71301222565
oct334404375
9130683556
1057805053
112a6a1879
1217437bb9
13bc8bb97
147969da5
15511c653
hex37208fd

57805053 has 8 divisors (see below), whose sum is σ = 77164416. Its totient is φ = 38491200.

The previous prime is 57805021. The next prime is 57805061. The reversal of 57805053 is 35050875.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57805053 - 25 = 57805021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57805093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8293 + ... + 13578.

It is an arithmetic number, because the mean of its divisors is an integer number (9645552).

Almost surely, 257805053 is an apocalyptic number.

It is an amenable number.

57805053 is a deficient number, since it is larger than the sum of its proper divisors (19359363).

57805053 is a wasteful number, since it uses less digits than its factorization.

57805053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22755.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 57805053 is about 7602.9634353981. The cubic root of 57805053 is about 386.6534900220.

The spelling of 57805053 in words is "fifty-seven million, eight hundred five thousand, fifty-three".

Divisors: 1 3 881 2643 21871 65613 19268351 57805053