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57054487 = 743118911
BaseRepresentation
bin1101100110100…
…1010100010111
310222100200001011
43121221110113
5104101220422
65354513051
71261645420
oct331512427
9128320034
1057054487
112a229976
1217135787
13ba88369
147812647
155020077
hex3669517

57054487 has 8 divisors (see below), whose sum is σ = 65359872. Its totient is φ = 48787800.

The previous prime is 57054469. The next prime is 57054497. The reversal of 57054487 is 78445075.

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

It is a cyclic number.

It is not a de Polignac number, because 57054487 - 223 = 48665879 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 (57054427) 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, 6439 + ... + 12472.

It is an arithmetic number, because the mean of its divisors is an integer number (8169984).

Almost surely, 257054487 is an apocalyptic number.

57054487 is a deficient number, since it is larger than the sum of its proper divisors (8305385).

57054487 is a wasteful number, since it uses less digits than its factorization.

57054487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19349.

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 57054487 is about 7553.4420630597. The cubic root of 57054487 is about 384.9727017244.

The spelling of 57054487 in words is "fifty-seven million, fifty-four thousand, four hundred eighty-seven".

Divisors: 1 7 431 3017 18911 132377 8150641 57054487