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57512099 = 311855229
BaseRepresentation
bin1101101101100…
…1000010100011
311000012220202202
43123121002203
5104210341344
65412403415
71265562521
oct333310243
9130186682
1057512099
112a511767
121731656b
13bbb8738
1478d1311
1550b094e
hex36d90a3

57512099 has 4 divisors (see below), whose sum is σ = 59367360. Its totient is φ = 55656840.

The previous prime is 57512057. The next prime is 57512131. The reversal of 57512099 is 99021575.

57512099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-57512099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57512009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 927584 + ... + 927645.

It is an arithmetic number, because the mean of its divisors is an integer number (14841840).

Almost surely, 257512099 is an apocalyptic number.

57512099 is a deficient number, since it is larger than the sum of its proper divisors (1855261).

57512099 is a wasteful number, since it uses less digits than its factorization.

57512099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855260.

The product of its (nonzero) digits is 28350, while the sum is 38.

The square root of 57512099 is about 7583.6731865238. The cubic root of 57512099 is about 385.9992013192. Note that the first 3 decimals are identical.

The spelling of 57512099 in words is "fifty-seven million, five hundred twelve thousand, ninety-nine".

Divisors: 1 31 1855229 57512099