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57053985 = 353803599
BaseRepresentation
bin1101100110100…
…1001100100001
310222100122100120
43121221030201
5104101211420
65354510453
71261644102
oct331511441
9128318316
1057053985
112a22955a
1217135429
13ba88071
1478123a9
15501ed40
hex3669321

57053985 has 8 divisors (see below), whose sum is σ = 91286400. Its totient is φ = 30428784.

The previous prime is 57053947. The next prime is 57053993. The reversal of 57053985 is 58935075.

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

It is not a de Polignac number, because 57053985 - 28 = 57053729 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1901785 + ... + 1901814.

It is an arithmetic number, because the mean of its divisors is an integer number (11410800).

Almost surely, 257053985 is an apocalyptic number.

It is an amenable number.

57053985 is a deficient number, since it is larger than the sum of its proper divisors (34232415).

57053985 is a wasteful number, since it uses less digits than its factorization.

57053985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3803607.

The product of its (nonzero) digits is 189000, while the sum is 42.

The square root of 57053985 is about 7553.4088331031. The cubic root of 57053985 is about 384.9715726467.

The spelling of 57053985 in words is "fifty-seven million, fifty-three thousand, nine hundred eighty-five".

Divisors: 1 3 5 15 3803599 11410797 19017995 57053985