Search a number
-
+
57457159 = 194370327
BaseRepresentation
bin1101101100101…
…1101000000111
311000010010101221
43123023220013
5104202112114
65411301211
71265243404
oct333135007
9130103357
1057457159
112a484461
12172aa807
13bb99726
1478b92ab
15509e524
hex36cba07

57457159 has 8 divisors (see below), whose sum is σ = 61888640. Its totient is φ = 53166456.

The previous prime is 57457129. The next prime is 57457177. The reversal of 57457159 is 95175475.

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 57457159 - 29 = 57456647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57457109) 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, 34347 + ... + 35980.

It is an arithmetic number, because the mean of its divisors is an integer number (7736080).

Almost surely, 257457159 is an apocalyptic number.

57457159 is a deficient number, since it is larger than the sum of its proper divisors (4431481).

57457159 is a wasteful number, since it uses less digits than its factorization.

57457159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70389.

The product of its digits is 220500, while the sum is 43.

The square root of 57457159 is about 7580.0500657977. The cubic root of 57457159 is about 385.8762500743.

The spelling of 57457159 in words is "fifty-seven million, four hundred fifty-seven thousand, one hundred fifty-nine".

Divisors: 1 19 43 817 70327 1336213 3024061 57457159