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57485 = 511497
BaseRepresentation
bin1110000010001101
32220212002
432002031
53314420
61122045
7326411
oct160215
986762
1057485
113a20a
1229325
132021c
1416d41
1512075
hexe08d

57485 has 4 divisors (see below), whose sum is σ = 68988. Its totient is φ = 45984.

The previous prime is 57467. The next prime is 57487. The reversal of 57485 is 58475.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27556 + 29929 = 166^2 + 173^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-57485 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 (57487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5744 + ... + 5753.

It is an arithmetic number, because the mean of its divisors is an integer number (17247).

257485 is an apocalyptic number.

It is an amenable number.

57485 is a deficient number, since it is larger than the sum of its proper divisors (11503).

57485 is a wasteful number, since it uses less digits than its factorization.

57485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11502.

The product of its digits is 5600, while the sum is 29.

The square root of 57485 is about 239.7602969634. The cubic root of 57485 is about 38.5938565755.

Subtracting 57485 from its reverse (58475), we obtain a triangular number (990 = T44).

The spelling of 57485 in words is "fifty-seven thousand, four hundred eighty-five".

Divisors: 1 5 11497 57485