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57054279 = 319018093
BaseRepresentation
bin1101100110100…
…1010001000111
310222100122202110
43121221101013
5104101214104
65354512103
71261645002
oct331512107
9128318673
1057054279
112a2297a7
1217135633
13ba88239
147812539
15501ee89
hex3669447

57054279 has 4 divisors (see below), whose sum is σ = 76072376. Its totient is φ = 38036184.

The previous prime is 57054269. The next prime is 57054289. The reversal of 57054279 is 97245075.

57054279 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 an interprime number because it is at equal distance from previous prime (57054269) and next prime (57054289).

It is not a de Polignac number, because 57054279 - 221 = 54957127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57054209) 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, 9509044 + ... + 9509049.

It is an arithmetic number, because the mean of its divisors is an integer number (19018094).

Almost surely, 257054279 is an apocalyptic number.

57054279 is a deficient number, since it is larger than the sum of its proper divisors (19018097).

57054279 is a wasteful number, since it uses less digits than its factorization.

57054279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19018096.

The product of its (nonzero) digits is 88200, while the sum is 39.

The square root of 57054279 is about 7553.4282944899. The cubic root of 57054279 is about 384.9722339002.

The spelling of 57054279 in words is "fifty-seven million, fifty-four thousand, two hundred seventy-nine".

Divisors: 1 3 19018093 57054279