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57427744027 = 197291511391
BaseRepresentation
bin110101011110111101…
…011101010100011011
312111020020102122220111
4311132331131110123
51420103000302102
642214255505151
74102053525103
oct653675352433
9174206378814
1057427744027
112239a512085
12b1685281b7
13555287c434
142acadd4203
151761a02cd7
hexd5ef5d51b

57427744027 has 4 divisors (see below), whose sum is σ = 57719255616. Its totient is φ = 57136232440.

The previous prime is 57427744021. The next prime is 57427744037. The reversal of 57427744027 is 72044772475.

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

It is a cyclic number.

It is not a de Polignac number, because 57427744027 - 23 = 57427744019 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57427744021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145755499 + ... + 145755892.

It is an arithmetic number, because the mean of its divisors is an integer number (14429813904).

Almost surely, 257427744027 is an apocalyptic number.

57427744027 is a deficient number, since it is larger than the sum of its proper divisors (291511589).

57427744027 is a wasteful number, since it uses less digits than its factorization.

57427744027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291511588.

The product of its (nonzero) digits is 3073280, while the sum is 49.

The spelling of 57427744027 in words is "fifty-seven billion, four hundred twenty-seven million, seven hundred forty-four thousand, twenty-seven".

Divisors: 1 197 291511391 57427744027