Search a number
-
+
57005271 = 3229375903
BaseRepresentation
bin1101100101110…
…1010011010111
310222021011112100
43121131103113
5104043132041
65353453143
71261352061
oct331352327
9128234470
1057005271
112a1a59a4
12171111b3
13ba6bb3b
1477dc731
1550106b6
hex365d4d7

57005271 has 24 divisors (see below), whose sum is σ = 87497280. Its totient is φ = 35695296.

The previous prime is 57005257. The next prime is 57005279. The reversal of 57005271 is 17250075.

It is not a de Polignac number, because 57005271 - 25 = 57005239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57005279) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6706 + ... + 12608.

It is an arithmetic number, because the mean of its divisors is an integer number (3645720).

Almost surely, 257005271 is an apocalyptic number.

57005271 is a deficient number, since it is larger than the sum of its proper divisors (30492009).

57005271 is a wasteful number, since it uses less digits than its factorization.

57005271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5975 (or 5972 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 57005271 is about 7550.1835077036. The cubic root of 57005271 is about 384.8619755980.

The spelling of 57005271 in words is "fifty-seven million, five thousand, two hundred seventy-one".

Divisors: 1 3 9 29 37 87 111 261 333 1073 3219 5903 9657 17709 53127 171187 218411 513561 655233 1540683 1965699 6333919 19001757 57005271